* 4x/xx/xx   25 The Story of Nathaniel Bowditch  (2)
* 4x/xx/xx   26 Lessons on Elements in the Soil  (2)
* 4x/xx/xx   53 Waves and Vibrations (2)
* 4x/xx/xx   54 A Scientific Approach to Propaganda  (2)
* 4x/xx/xx   55 Superchargers  (2)
* 4x/xx/xx   56 Biography of a Bivalve  (2)
* 4x/xx/xx   57 Oliver Wendell Homes  (2)
* 4x/xx/xx   58 The Curious Costs of Water  (2)
* 4x/xx/xx   59 The Earth and Its Motions (2)
* 4x/xx/xx   63 The Mechanics of Skiing (2)
* 4x/xx/xx   64 The Story of Sulfa Drugs  (2)
* 4x/xx/xx   65 Let the Bee Take a Bow (2)
* 4x/xx/xx   65 The Story of Christopher Wren  (2)
* 4x/xx/xx   67 The Intensity of Light (2)
* 4x/xx/xx   68 Soaring and Gliding  (2)
* 4x/xx/xx   69 The Life of Louis Agassiz (2)
* 4x/xx/xx   70 The Birth and Death of the Sun  (2)
* 4x/xx/xx   71 Sparkplugs of the Human Body (2)
* 4x/xx/xx   72 Experimenting with Rust  (2)
* 4x/xx/xx   73 Cosmic Rays (2)
* 4x/xx/xx   74 Sustaining the Story of Julius Robert Mayer, Who Formulated  (2)
* 4x/xx/xx   75 Magnesium - the Lightweight Champion (2)
* 4x/xx/xx   76 Made with Milk (2)
* 4x/xx/xx   77 The Story of Lightning (2)
* 4x/xx/xx   78 Bombs and Bomb Shelters (2)
* 4x/xx/xx   79 Camouflage in Aerial Warfare (2)
* 4x/xx/xx   80 A Field by the Side of the Road (2)
* 4x/xx/xx   81 It Floats Through the Air (2)
* 4x/xx/xx   82 Mata Hari with a Glass Eye (2)
* 4x/xx/xx   83 Iron Mike - the Robot Pilot (2)
* 4x/xx/xx   84 The Story of Propellers (2)
* 4x/xx/xx   85 The Bomber's Boss (2)
* 4x/xx/xx   86 The Story of Wind Tunnels (2)
* 4x/xx/xx   87 The Bombardier and His Job (2)
* 4x/xx/xx   88 The Story of Airplane Engines (2)
* 4x/xx/xx   89 The Bomber's Back-Seat Driver (2)
* 4x/xx/xx   90 Aerial Gunners (2)
* 4x/xx/xx   91 Vestpocket Victuals  (2)
* 4x/xx/xx   92 Stratosphere Equipment (2)
* 4x/xx/xx   93 Warfare, Aztec Style (2)
* 4x/xx/xx   94 Drugs - Crude and Synthetic (2)
* 4x/xx/xx   95 Chronology of the Calendar (2)
* 4x/xx/xx   97 Geography of the Pacific (2)
* 4x/xx/xx   98 Man, the Mechanical Misfit (2)
* 4x/xx/xx   99 Liquid Motor Fuels (2)
* 4x/xx/xx  100 Wartime Morale (2)
* 4x/xx/xx  101 Science Vs Folklore (2)
* 4x/xx/xx  102 Camouflage in Nature (2)
* 4x/xx/xx  103 Plagues, Pestilences and Epidemics (2)
* 4x/xx/xx  104 A Scientist in Wartime (2)
* 4x/xx/xx  105 Roman Numerals Vs Decimals (2)
* 4x/xx/xx  106 Electronics in Wartime  (2)
* 4x/xx/xx  107 Behavior - Man Vs Animal (2)
* 4x/xx/xx  108 The Story of John Winthrop Jr (2)
* 4x/xx/xx  111 Man and the Climate (2)
* 4x/xx/xx  112 Experiments by Candlelight (2)
* 4x/xx/xx  115 Man's Small Relations (2)
* 4x/xx/xx  116 The Genius of the Cavendish (2)
* 4x/xx/xx  117 Wartime Influence on Architecture (2)
* 4x/xx/xx  118 Googols and Googolplexes (2)
* 4x/xx/xx  119 Plastics at War and Thereafter (2)
* 4x/xx/xx  120 How Heat Travels (2)
* 4x/xx/xx  121 The Bank the Doctors Built (2)
* 4x/xx/xx  122 Extending Man's Vision (2)
* 4x/xx/xx  126 Rubber - New Style (2)
* 4x/xx/xx  129 Earthquakes in Japan (2)
* 4x/xx/xx  130 Wheels Within Wheels  (2)
* 4x/xx/xx  133 The Energy of Sunlight (2)
* 4x/xx/xx  134 Wars of North Africa (2)
* 4x/xx/xx  135 Surgery at the Front (2)
* 4x/xx/xx  136 Fooling Ourselves (2)
* 4x/xx/xx  137 How Dry I Am (2)
* 4x/xx/xx  138 How Doth the Little Busy Bee (2)
* 4x/xx/xx  139 Astronomy and War (2)
* 4x/xx/xx  140 Discoverer of the Human Body (2)
* 4x/xx/xx  143 Things That Go Bang (2)
* 4x/xx/xx  144 The Ocean in Which We Live (2)
* 4x/xx/xx  145 Adventures of an Amateur Diver (2)
* 4x/xx/xx  146 Railroads and Their Wartime Research (2)
* 4x/xx/xx  147 It's in the Barrel (2)
* 4x/xx/xx  148 The Story of Copernicus  (2)
* 4x/xx/xx  149 The New Catalogue of Plastics (2)
* 4x/xx/xx  150 Meteorites - Man's Earliest Alloys (2)
* 4x/xx/xx  151 Glass Goes to War (2)
* 4x/xx/xx  152 Experiments with Time (2)
* 4x/xx/xx  153 Things Izaak Walton Never Knew (2)
* 4x/xx/xx  154 The Secret of Mechanized War (2)
* 4x/xx/xx  155 Future Sources of Power (2)
* 4x/xx/xx  156 Visit with a Great Science Teacher (2)
* 4x/xx/xx  157 Physics and War (2) (2)
* 4x/xx/xx  158 Snakes Are Where You Find Them (2) (2)
* 4x/xx/xx  159 Emergency Foods (2) (2)
* 4x/xx/xx  160 Experiments with a Bottle  (2)
* 4x/xx/xx  161 Who's Crazy Now (2)
* 4x/xx/xx  162 Evolution of a Secret Weapon (2)
* 4x/xx/xx  163 Microbes and Man (2) (2)
* 4x/xx/xx  164 Second Fiddle to Genius (2)
* 4x/xx/xx  165 How to See in the Dark (2) (2)
* 4x/xx/xx  166 Smugglers of Insects (2)
* 4x/xx/xx  167 Strange Diseases of the Tropics (2) (2)
* 4x/xx/xx  168 Molecules in the Kitchen (2) (2)
* 4x/xx/xx  169 Scientific Instruments in Modern Warfare (2)
* 4x/xx/xx  170 Chemical Liquid Fertilizers (2) (2)
* 4x/xx/xx  173 High Blood Pressure (2)
* 4x/xx/xx  174 Talking Wire (2) (2)
* 4x/xx/xx  175 Clues to the Past (2) (2)
* 4x/xx/xx  176 Patterns (2) (2)
* 4x/xx/xx  177 Solomon's Seaport  (2)
* 4x/xx/xx  178 How to Find Your Way Without Instruments (2)
* 4x/xx/xx  179 Australian Mammals (2) (2)
* 4x/xx/xx  180 A Quaker Schoolmaster (2) (2)
* 4x/xx/xx  181 The Ancestry of a Bar of Soap (2)
* 4x/xx/xx  182 Psychology - the Hope of the Future (2)
* 4x/xx/xx  183 Hitch Your Rocket to a Star (2)
* 4x/xx/xx  184 Shadows (2) (2)
* 4x/xx/xx  185 Japanese Life and Culture (2)
* 4x/xx/xx  186 Spirit of Scientific Research (2)
* 4x/xx/xx  187 The Birth of a Planet (2)
* 4x/xx/xx  188 Plain Michael Faraday (2)
* 4x/xx/xx  189 Mexico's New Volcano (2)
* 4x/xx/xx  190 Human Heredity (2)
* 4x/xx/xx  191 Radiology and X-Ray in Wartime 
* 4x/xx/xx  192 Some Elementary Ideas of Physics (2) (2)
* 4x/xx/xx  193 Parasitic Dangers in the Black Market (2) (2)
* 4x/xx/xx  194 Ethnology of the Pacific Area (2) (2)
* 4x/xx/xx  195 Ebb and Flow in Animal Numbers (2) (2)
* 4x/xx/xx  196 Yardstick in the Sky (2) (2)
* 4x/xx/xx  197 Fossil Forests of the Past (2) (2)
* 4x/xx/xx  198 A Geologist Looks at the Mediterranean (2) (2)
* 4x/xx/xx  199 Singing Insects (2) (2)
* 4x/xx/xx  200 Is Heat a Substance (2)
* 4x/xx/xx  201 Jet Propulsion (2) (2)
* 4x/xx/xx  202 Some Fables from Nature  (2)
* 4x/xx/xx  203 The History of Motion Pictures (2)
* 4x/xx/xx  204 An Encyclopedic Mind (2)
* 4x/xx/xx  205 Charting the War (2)
* 4x/xx/xx  206 Soldier's Fatigue (2)
* 4x/xx/xx  207 Wartime Nutrition and the Teeth (2)
* 4x/xx/xx  208 Creative Design (2) (2)
* 4x/xx/xx  209 Scientific Research in Japan (2)
* 4x/xx/xx  210 Homing Pigeons (2) (2)
* 4x/xx/xx  211 Medicinal Gardening (2) (2)
* 4x/xx/xx  212 A Paleontological President (2) (2)
* 4x/xx/xx  213 The Meaning of Intelligence (2) (2)
* 4x/xx/xx  214 Liquid Air (2) (2)
* 4x/xx/xx  215 Penicillin (2) (2)
* 4x/xx/xx  216 Wartime Uses of Psychology (2)
* 4x/xx/xx  217 Science in Germany (2) (2)
* 4x/xx/xx  218 The Miracle Life Saver (2)
* 4x/xx/xx  219 Insects of Two Hundred Million Years Ago (2) (2)
* 4x/xx/xx  220 Mobile Power Plants (2)
* 4x/xx/xx  221 From Mysticism to Science in Pharmacy (2) (2)
* 4x/xx/xx  222 Silicone Rubber (2) (2)
* 4x/xx/xx  223 Quartz, the Ubiquitous Mineral (2)
* 4x/xx/xx  224 Natural Radar - the Flying Bat (2)
* 4x/xx/xx  225 The Armament System for the B-29 (2) (2)
* 4x/xx/xx  226 Homicide Investigate (2) (2)
* 4x/xx/xx  227 Science and the Race Problem (2)
* 4x/xx/xx  228 The Story of Vitamin C  (2)
* 4x/xx/xx  229 Allergies (2)
* 4x/xx/xx  230 Lichens (2) (2)
* 4x/xx/xx  231 Diseases of Metals (2) (2)
* 4x/xx/xx  232 The Lost Continent of Atlantis (2) (2)
* 4x/xx/xx  233 The Attack on Stuttering (2) (2)
* 4x/xx/xx  234 A Window on a New World (2)
* 4x/xx/xx  235 The Astronomical Detective (2)
* 4x/xx/xx  236 Lesser Known Effects of Light (2) (2)
* 4x/xx/xx  237 Brain Waves (2) (2)
* 4x/xx/xx  238 The Archeological Detective (2)
* 4x/xx/xx  239 Chlorophyll, Key to Survival (2)
* 4x/xx/xx  240 The Nearest Stars (2) (2)
* 4x/xx/xx  241 New Advances in Army Medicine (2) (2)
* 4x/xx/xx  242 Nature, the Repairman (2) (2)
* 4x/xx/xx  243 Radio Transmission and the Moon (2)
* 4x/xx/xx  244 Safe and Sane Reducing (2)
* 4x/xx/xx  245 Rockets and Rocket Weapons (2)
* 4x/xx/xx  246 Possible Private Uses of Aircraft After the War (2) (2)
* 4x/xx/xx  247 Orchids, Adventure and Science Go Hand in Hand (2) (2)
* 4x/xx/xx  248 Why Do Ice Ages Occur (2)
* 4x/xx/xx  249 The Child's Toy That Became a Deadly Instrument of War (2) (2)
* 4x/xx/xx  250 New Uses of Wood (2)
* 4x/xx/xx  251 What We Know About Polio (2)
* 4x/xx/xx  252 Photographing the Ocean Bottom (2)
* 4x/xx/xx  253 Indian Knowledge of Nature (2) (2)
* 4x/xx/xx  254 Earth's Oldest Fossils (2) (2)
* 4x/xx/xx  255 Collecting Butterflies (2) (2)
* 4x/xx/xx  256 What Is a Soil (2)
* 4x/xx/xx  257 Atomic Power (3) (2)
* 4x/xx/xx  258 How Much Do We Inherit (2)
* 4x/xx/xx  263 Prevention of Air and Sea Sickness  (2)
* 4x/xx/xx  264 The Reptilian Aristocracy (2)
* 4x/xx/xx  267 Within the Atom (2)
* 4x/xx/xx  268 Energy from Mass (2)
* 4x/xx/xx  269 Splitting the Uranium Nucleus (2) (2)
* 4x/xx/xx  270 Sieves for Sorting Nuclei (2)
* 4x/xx/xx  271 Nuclear Fuel (3) (2)
* 4x/xx/xx  272 Post-War Jobs for the Nucleus (2) (2)
* 4x/xx/xx  273 Scientific Exploration and War (2)
* 4x/xx/xx  274 A Mighty Tool of Science (2)
* 4x/xx/xx  275 Superstition Is a Business (2)
* 4x/xx/xx  276 Electronic Warfare (2)
* 4x/xx/xx  277 The Story of Radar, Chapter One (2)
* 4x/xx/xx  278 The Story of Radar, Chapter Two (2) (2)
* 4x/xx/xx  279 The Story of Radar, Chapter Three (2) (2)
* 4x/xx/xx  280 Tropical Diseases Brought Home by Servicemen (2)
* 4x/xx/xx  281 Meteors and the Earth's Upper Atmosphere (2) (2)
* 4x/xx/xx  282 Music - from Magic into Science (2)
* 4x/xx/xx  283 Weather Forecasting (2) (2)
* 4x/xx/xx  284 Taste - the Forgotten Sense (2)
* 4x/xx/xx  288 A Piece of Stone (2)
* 4x/xx/xx  289 Guba - Ship of Discovery (2)
* 4x/xx/xx  290 Folk Remedies (2) (2)
* 4x/xx/xx  291 Penicillin's Third Cousins (2)
* 4x/xx/xx  292 Radio's Contribution to Electronics (2)
* 4x/xx/xx  293 Sofar at Sea (2)
* 4x/xx/xx  294 Ring Around a Tree Trunk (2)
* 4x/xx/xx  295 Proteins in Health and Disease  (2)
* 4x/xx/xx  296 Aviation Fuels (2) (2)
* 4x/xx/xx  297 No Harvest for Bugs (2) (2)
* 4x/xx/xx  298 Human Progress (2) (2)
* 4x/xx/xx  299 So You Want to Live in a Cave (2)
* 4x/xx/xx  300 Amateur Scientists in the War (2) (2)
* 4x/xx/xx  301 Seventy Five Miles (2)
* 4x/xx/xx  302 Keeping Comfortable with Clothing (2) (2)
* 4x/xx/xx  303 The Giant Eye of Palomar (2) (2)
* 4x/xx/xx  304 Typhus Control in World War I I (2)
* 4x/xx/xx  305 The Energy of the Sun (2)
* 4x/xx/xx  306 Science Fiction (2)
* 4x/xx/xx  307 Progress in Safe Flying (2) (2)
* 4x/xx/xx  308 Silent Death (2)
* 4x/xx/xx  309 The Planet Neptune  (2)
* 4x/xx/xx  310 Meteor Showers (2)
* 4x/xx/xx  313 Natural Science and Industry (2)
* 4x/xx/xx  314 The History of Plastics (2)
* 4x/xx/xx  315 Plastics Research and Development (2) (2)
* 4x/xx/xx  316 Manufacturing Techniques in Plastics (2) (2)
* 4x/xx/xx  317 Plastics and the Consumer (2)
* 4x/xx/xx  318 Fossil Man (2) (2)
* 4x/xx/xx  319 Responsibilities of Technical Authors (2) (2)
* 4x/xx/xx  320 Tycho Brahe (2) (2)
* 4x/xx/xx  321 Motive Power for Tomorrow's Trains  (2)
* 4x/xx/xx  322 Geophysical Prospecting (2) (2)
* 4x/xx/xx  323 Polar Navigation (2) (2)
* 4x/xx/xx  324 New Light on the Old Masters (2) (2)
* 4x/xx/xx  325 Scientific Computation (2)
* 4x/xx/xx  326 What's New on the Party Line (2)
* 4x/xx/xx  327 Natural Science and Education (2)
* 4x/xx/xx  328 Seeing with Sound (2) (2)
* 4x/xx/xx  329 The New Elements (2) (2)
* 4x/xx/xx  330 Future Atomic Research (2) (2)
* 4x/xx/xx  331 Snow and Clouds (2)
* 4x/xx/xx  332 Modern Science Teaching (2) (2)
* 4x/xx/xx  333 The Significance of Petroleum (2)
* 4x/xx/xx  334 Shouting from the Sky (2) (2)
* 4x/xx/xx  337 The World Is Unfinished (2)
* 4x/xx/xx  338 Appointment with a Shadow  (2)
* 4x/xx/xx  341 Housing Through the Ages (2) (2)
* 4x/xx/xx  342 Margin for Survival (2) (2)
* 4x/xx/xx  343 Natural Science and Social Problems (2) (2)
* 4x/xx/xx  344 The Northwest Passage (2) (2)
* 4x/xx/xx  345 Aircraft Communications (2)
* 4x/xx/xx  346 A Clue, a Spectrum, and the F B I (2)
* 4x/xx/xx  347 Science and Pictorial Art (2)
* 4x/xx/xx  348 Fossilizing Snowflakes (2) (2)
* 4x/xx/xx  349 The Heat Pump (2) (2)
* 4x/xx/xx  350 Bird Navigation (2) (2)
* 4x/xx/xx  351 Hydrotherapy (2) (2)
* 4x/xx/xx  352 Elastomers (2)
* 4x/xx/xx  353 Research in Iron and Steel  (2)
* 4x/xx/xx  354 Diamonds (2)
* 4x/xx/xx  355 Ceramics on the Wing (2) (2)
* 4x/xx/xx  356 Report from Japan (2) (2)
* 4x/xx/xx  357 Light in the Night Sky (2) (2)
* 4x/xx/xx  358 New Uses for Coal (2) (2)
* 4x/xx/xx  359 The Living Substance (2)
* 4x/xx/xx  360 Meteorology at High Altitudes (2)
* 4x/xx/xx  361 Science and the University (2)
* 4x/xx/xx  362 Hypnotism and Modern Medicine (2) (2)
* 4x/xx/xx  363 The Approach to Absolute Zero (2) (2)
* 4x/xx/xx  364 Industrial Laboratories and Medical Research (2) (2)
* 4x/xx/xx  365 Bridging the Gap (2) (2)
* 4x/xx/xx  366 Recent Developments in Medicinal Chemistry (2) (2)
* 4x/xx/xx  367 Chemical Forces Between Large Molecules (2)
* 4x/xx/xx  368 Your Nose Is a Radiator (2)
* 4x/xx/xx  370 Motorless Flight (2) (2)
* 4x/xx/xx  371 Elementary Particles (2) (2)
* 4x/xx/xx  372 Man Made Skies (2) (2)
* 4x/xx/xx  373 Glass Comes of Age (2) (2)
* 4x/xx/xx  374 Be Your Own Weatherman (2)
* 4x/xx/xx  375 New Uses for Rare Elements (2)
* 4x/xx/xx  376 Animal Behavior (2)
* 4x/xx/xx  377 The Pulse Beat of Technical Publishing (2) (2)
* 4x/xx/xx  378 A New Vapor Detector (2)
* 4x/xx/xx  379 The Chemistry and Geometry of Giant Molecules (2) (2)
* 4x/xx/xx  380 It's a Date (2) (2)
* 4x/xx/xx  381 Sound Waves and the Upper Atmosphere  (2)
* 4x/xx/xx  382 Supersonic Wind Tunnel for Optical Studies (2) (2)
* 4x/xx/xx  383 The Oneonta Science Congress (2) (2)
* 4x/xx/xx  384 Frequency and Bandwidth (2) (2)
* 4x/xx/xx  385 Project Cirrus (2) (2)
* 4x/xx/xx  386 Visual Science Education (2)
* 4x/xx/xx  387 How Long Will You Live (2)
* 4x/xx/xx  388 Comparison of English and American Research (2) (2)
* 4x/xx/xx  389 The Salvage of Coal Silt (2) (2)
* 4x/xx/xx  390 Science and Its Impact on Society (2)
* 4x/xx/xx  391 Ventilated Clothing (2) (2)
* 4x/xx/xx  392 Science and the Paper Industry (2)
* 4x/xx/xx  393 The Penguin (2) (2)
* 4x/xx/xx  394 World Fuel Situation (2)
* 4x/xx/xx  395 Radio Waves from Space  (2)
* 4x/xx/xx  396 Bone Bank (2) (2)
* 4x/xx/xx  397 Power - What It Means, Where It Comes From (2)
* 4x/xx/xx  398 Light Organ of the Firefly (2)
* 4x/xx/xx  399 Science Comes of Age (2) (2)
* 4x/xx/xx  400 Atmospheric Atoms (2) (2)
* 4x/xx/xx  401 Atomic Power (2) (2)
* 4x/xx/xx  402 Psychological Quacks (2) (2)
* 4x/xx/xx  403 Crystal Clocks (2) (2)
* 4x/xx/xx  404 Occupational Marks (2)
* 4x/xx/xx  406 Government in Research (2)
* 4x/xx/xx  407 Social Physics (2)
* 4x/xx/xx  408 Isotopes in Medicine and Biology  (2)
* 4x/xx/xx  409 The Water Table (2) (2)
* 4x/xx/xx  410 Orion Heralds the Winter (2) (2)
* 4x/xx/xx  411 Germ Free Animals and Their Use (2) (2)
* 4x/xx/xx  412 Plastic Roads (2) (2)
* 4x/xx/xx  413 Insect Control with D D T-Aerosols (2)
* 4x/xx/xx  414 Phosphors (2)
* 4x/xx/xx  415 Science, Psychiatry, Survival (2)
* 4x/xx/xx  416 Possibility of Predicting Earthquakes (2) (2)
* 4x/xx/xx  417 High Speed Events and Photography (2) (2)
* 4x/xx/xx  418 Fluorine and Dental Decay (2)
* 4x/xx/xx  420 Designing Research Laboratories (2)
* 4x/xx/xx  421 Chemotherapy (2)
* 4x/xx/xx  422 Low Temperature Physics  (2)
* 4x/xx/xx  425 Biology of Bikini (2)
* 4x/xx/xx  426 Research for the Blind (2) (2)
* 4x/xx/xx  427 Bird Migration Patterns (2) (2)
* 4x/xx/xx  428 Ion Exchange (2) (2)
* 4x/xx/xx  429 Science and Natural Resources (2) (2)
* 4x/xx/xx  430 Soil Science (2) (2)
* 4x/xx/xx  431 Forest Conversation (2) (2)
* 4x/xx/xx  432 Wildlife Resources (2)
* 4x/xx/xx  433 Ground Water (2) (2)
* 4x/xx/xx  434 Water Power (2) (2)
* 4x/xx/xx  435 Weather as a Natural Resource (2) (2)
* 4x/xx/xx  436 Coal, Petroleum and Modern Science (2)
* 4x/xx/xx  438 Minerals and Geological Research  (2)
* 43/xx/xx  125 On a Piece of Chalk 
* 47/12/xx  369 Science in 1947 
* 48/xx/xx  405 Mt Palomar Observatory
* 48/xx/xx  419 Science and Technology, 1948 
* 49/xx/xx  437 Future Mineral Supplies 
* 50/xx/xx  472 Transistor 
* 50/xx/xx  498 Space Travel 
* 52/xx/xx  558 Heat Transfer 
* 52/xx/xx  565 Trans-Atlantic Radio 
* 52/xx/xx  566 Insecticides 
* 53/11/xx  604 Alaskan Anthropology 
* 53/xx/xx  588 American Chemistry Has a Past 
* 53/xx/xx  590 It's a Colorful Life 
* xx/xx/xx  439 Solar Power as a Natural Resource (2)
* xx/xx/xx  440 Atomic Energy as a Natural Resource (2)
* xx/xx/xx  441 The Future of Natural Resources (2)
* xx/xx/xx  442 Mayan Culture (2)
* xx/xx/xx  443 New Eyes to the Sky (2)
* xx/xx/xx  444 Climatology (2)
* xx/xx/xx  445 New Tools for Archeology (2)
* xx/xx/xx  446 New Techniques in Psychiatric Treatment (2)
* xx/xx/xx  447 Problems of Chronic Illness (2)
* xx/xx/xx  448 Science Puts Nothing to Work (2)
* xx/xx/xx  449 Integration of a Zeiss Planetarium with University  (2)
* xx/xx/xx  450 Exploring for Iron Ore in the Adirondacks (2)
* xx/xx/xx  451 Wood Preservation 
* xx/xx/xx  452 Minerals and Man (2)
* xx/xx/xx  453 Microorganisms as Food (2)
* xx/xx/xx  454 Mice and Cancer Research (2)
* xx/xx/xx  455 Measuring Steel with X-Rays (2)
* xx/xx/xx  456 Cosmetics as a Field for Scientific Research (2)
* xx/xx/xx  457 Isotopes (2)
* xx/xx/xx  458 Exploring the Molecule with Radar Waves (2)
* xx/xx/xx  459 Biochemical Mutations and Chemo-Therapy (2)
* xx/xx/xx  460 The Scientific Uses of Photography (2)
* xx/xx/xx  461 What Modern Petroleum Research Means to You (2)
* xx/xx/xx  462 Early Science and Engineering Education (2)
* xx/xx/xx  463 Meteorology at Brookhaven National Laboratory (2)
* xx/xx/xx  464 Science of the Lead Pencil 
* xx/xx/xx  465 Population Changes in the Animal World (2)
* xx/xx/xx  466 Rheumatic Disease (2)
* xx/xx/xx  467 Accident Prevention in Research 
* xx/xx/xx  468 Research in Fuels (2)
* xx/xx/xx  469 Joseph Henry (2)
* xx/xx/xx  470 The Calendar (2)
* xx/xx/xx  471 Recent Trends in Equipment For, and Applications Of, X-Rays (2)
  xx/xx/xx  472 Transistor
* xx/xx/xx  473 Exchange Reactions (2)
* xx/xx/xx  474 Research in Abrasives (2)
* xx/xx/xx  475 Dendrochronology (2)
* xx/xx/xx  476 Pharmaceuticals from Fishery By-Products (2)
* xx/xx/xx  477 Science of Man (2)
* xx/xx/xx  478 Evolution of Leather (2)
* xx/xx/xx  479 Joseph Priestly (2)
* xx/xx/xx  480 Work of Breathing (2)
* xx/xx/xx  481 Rain Making (2)
* xx/xx/xx  482 Nuclear Fuel 
* xx/xx/xx  483 Dust in ( The) Atmosphere
* xx/xx/xx  484 Human Fatigue (2)
* xx/xx/xx  485 Cosmic Radiation (2)
* xx/xx/xx  486 Piezoelectricity (2)
* xx/xx/xx  487 Shielding Modern Reactors (2)
* xx/xx/xx  488 Cancer Chemotherapy (2)
* xx/xx/xx  489 Limestone (2)
* xx/xx/xx  490 Aptitude Tests (2)
* xx/xx/xx  491 Adaptation to Arctic Climates (2)
* xx/xx/xx  493 Antibiotics (2)
* xx/xx/xx  494 Frozen Foods (2)
* xx/xx/xx  495 Sugar (2)
* xx/xx/xx  496 Rebuilding the White House (2)
* xx/xx/xx  497 Plants in Liberia (2)
  xx/xx/xx  498 Space Travel
* xx/xx/xx  499 Radioactive Iodine (2)
* xx/xx/xx  502 Protein Synthesis 
* xx/xx/xx  503 Matches (2)
* xx/xx/xx  504 Skyshooting (2)
* xx/xx/xx  505 Chemical Control of Plant Growth (2)
* xx/xx/xx  506 Air Blast Effects (2)
* xx/xx/xx  507 Bats (2)
* xx/xx/xx  508 Atomic Clock of the Ages (2)
* xx/xx/xx  509 Permafrost (2)
* xx/xx/xx  510 Bloodclot Therapy (2)
* xx/xx/xx  511 Chemical Corps Research (2)
* xx/xx/xx  512 Foams (2)
* xx/xx/xx  513 Paracelsus (2)
* xx/xx/xx  514 Research in Aromatics (2)
* xx/xx/xx  516 Asteroids (2)
* xx/xx/xx  517 Less Pain in Dentistry (2)
* xx/xx/xx  518 Pressure of Our Times (2)
* xx/xx/xx  519 The Elements (2)
* xx/xx/xx  520 Sources and Uses of Energy (2)
* xx/xx/xx  521 Amber (2)
* xx/xx/xx  522 Fish and Game Management 
* xx/xx/xx  523 Vertebrae Thyroid Gland
* xx/xx/xx  524 Research for Fruit Genetics (2)
* xx/xx/xx  525 Chubb Crater (2)
* xx/xx/xx  526 Science Education in the Netherlands (2)
* xx/xx/xx  527 Extended Weather Forecast (2)
* xx/xx/xx  528 Electron Microscope (2)
* xx/xx/xx  529 Electronics in Pharmaceutical Research (2)
* xx/xx/xx  530 Flavor (2)
* xx/xx/xx  531 Modern Dental Research (2)
* xx/xx/xx  532 Research in Cancer (2)
* xx/xx/xx  534 Plane of the Future (2)
* xx/xx/xx  535 Romance Behind Nuclear Research (2)
* xx/xx/xx  536 Aerial Photography (2)
* xx/xx/xx  537 Tomorrow's Leaders in Science
* xx/xx/xx  538 Scientific Hobbies (2)
* xx/xx/xx  539 Rain Erosion on Aircraft (2)
* xx/xx/xx  540 Big and Little Stars (2)
* xx/xx/xx  542 Adhesives (2)
* xx/xx/xx  543 Poisonous Plants (2)
* xx/xx/xx  544 Library Machines (2)
* xx/xx/xx  545 Underwater Motion Pictures (2)
* xx/xx/xx  546 Jet Aircraft (2)
* xx/xx/xx  547 Modern Food Research (2)
* xx/xx/xx  548 Plastics in Modern Life (2)
* xx/xx/xx  549 Century of Ice Cream
* xx/xx/xx  550 Synthetic Chemistry 
* xx/xx/xx  551 Chemistry Saves Your Life 
* xx/xx/xx  552 The Soil 
* xx/xx/xx  553 Dietary Control of Tooth Decay
* xx/xx/xx  554 Refraction in the Atmosphere (2)
* xx/xx/xx  555 Microclimate 
* xx/xx/xx  556 Research in Textiles 
* xx/xx/xx  557 Artificial Kidney 
* xx/xx/xx  558 Heat Transfer
* xx/xx/xx  559 Pharmaceuticals of Animal Origin (2)
* xx/xx/xx  561 Food Science (2)
* xx/xx/xx  562 Our Debt to the Indians 
* xx/xx/xx  563 Earthworms 
* xx/xx/xx  564 Furan Chemistry (2)
  xx/xx/xx  565 Trans-Atlantic Radio
  xx/xx/xx  566 Insecticides
* xx/xx/xx  567 The Day and the Date Line (2)
* xx/xx/xx  568 Alcoholism (2)
* xx/xx/xx  569 Preserving Our Documentary Heritage 
* xx/xx/xx  570 Photosynthesis (2)
* xx/xx/xx  571 The Walter Reed Volunteers (2)
* xx/xx/xx  572 How Big Is an Animal's Living Space
* xx/xx/xx  573 Volcanic Explosions (2)
* xx/xx/xx  574 Work of Developmental Engineers (2)
* xx/xx/xx  576 Chemicals Against Tuberculosis (2)
* xx/xx/xx  578 Developments of Agricultural Research (2)
* xx/xx/xx  579 Dating the Oceans (2)
* xx/xx/xx  581 The Fastest Ten Years in History ( the History of Jet 
* xx/xx/xx  582 Synthesis of Antibiotics (2)
* xx/xx/xx  583 Biological Engineering (2)
* xx/xx/xx  584 Bird Migration (2)
* xx/xx/xx  585 Our Search for Uranium (2)
* xx/xx/xx  586 Science and Speculation 
* xx/xx/xx  587 Chemistry's Next Decade (2)
  xx/xx/xx  588 American Chemistry Has A Past
* xx/xx/xx  589 Alloys (2)
  xx/xx/xx  590 It's A Colorful Life
* xx/xx/xx  591 New Search for Old Minerals (2)
* xx/xx/xx  594 Automatic Controls (2)
* xx/xx/xx  595 Hypertension (2)
* xx/xx/xx  597 Medical Education (2)
* xx/xx/xx  600 Research on Natural Rubber (2)
* xx/xx/xx  601 Cosmic Rays (3)
* xx/xx/xx  602 Photographic Glass (2)
* xx/xx/xx  603 Snake Facts and Fallacies 
  xx/xx/xx  604 Alaskan Anthropology
* xx/xx/xx  605 Medical Uses for Radioactive Materials (2)
* xx/xx/xx  606 Cortisone (2)
* xx/xx/xx  607 Fitting Men to Machines (2)
* xx/xx/xx  609 Illusions (2)
* xx/xx/xx  610 Tuna Research in the Pacific Ocean (2)
* xx/xx/xx  611 The Story of Geranium (2)
* xx/xx/xx  612 A Geologist Looks at the Sky (2)
* xx/xx/xx  613 A Native Liberian Village (2)
* xx/xx/xx  614 Lightning Research (2)
* xx/xx/xx  615 The Early Woodland Period (2)
* xx/xx/xx  617 The Conquest of Malaria (2)
* xx/xx/xx  618 Polymers (2)
* xx/xx/xx  622 The Motions of the North Pole (2)
* xx/xx/xx  625 Superconductivity (2)
* xx/xx/xx  628 Modern Day Detergents (2)
* xx/xx/xx  630 Atomic Clocks
* xx/xx/xx  631 The Scientific Mission of Captain Bligh
* xx/xx/xx  632 Periodical Cicada 
* xx/xx/xx  633 Nineteen Seventy Five 
* xx/xx/xx  634 Understanding the Sense of Smell 
* xx/xx/xx  635 Breeding of Atomic Fuel 
* xx/xx/xx  636 Why and What About Whiskers
* xx/xx/xx  637 Chemical Change from High Energy Beams 
* xx/xx/xx  638 The Scale of the Universe 
* xx/xx/xx  640 The Noble Gasses 
* xx/xx/xx  641 Physics and Cancer 
* xx/xx/xx  643 Petroleum Processing 
* xx/xx/xx  644 Atomic Devices
* xx/xx/xx  645 Air Flow over Mountains 
* xx/xx/xx  646 Climate and Industrial Activity 
* xx/xx/xx  647 The Tablets of Nipper