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Scientific American Year 1931 Magazine Back Issues

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  • Synthetic Life From Chemicals - A New Advance
  • Why The Space Rocket? X Rays And Alloys
  • Modern Steel Mill Efficiency
  • Automobile Number
  • Motor Car Review.. Diesel Bus... Trailers
  • Keep To The Right
  • Companions In Depression - By Raymond B. Fosdick
  • Future Of The Rocket... Oil Prospecting By Airplane
  • Research On The Mystery Of The Aurora
  • Vacuum Tubes In Industry
  • A New Use For Radium
  • Radio In Crime Detection
  • American Made Locomotives For Foreign Railroads
  • An Industry That Was Made - To - Order
  • Which Races Are Best?
  • How Big Is A Quantum?
  • How The Aviator Sees A Rain-Bow
  • New Ideas - The Life Of Industry Shall We Reform Our Calendar?.. Man's Inseet Allies
  • June 1931 35c A Copy
  • Triangulation - Building The Backbone Of Accurate Map's
  • July 1931
  • Scientific American 35c A Copy
  • Probing The Earth Beneath.... By Ernest A. Hodgson
  • Insects Versus Man.... By L. O. Howard
  • Progress And The Telephone... By F. D. McHugh
  • Food From Seaweeds.... By Crane And Thurston
  • Is Science Approaching A Stalemate?... By Dr. Paul R. Hesl
  • Natural Gasoline From Oil Wells.... By Prof. G. Ross Robertson
  • Is Interstellar Space Empty?.... By Prof. Henry Norris Russell
  • A Hidden World In A Drop Of Water ... By M.C. Swingle
  • Are Swimming Pools A Health Menace?... By Orson D. Mann
  • New Hope For The Cotton Industry... By Peter A. Carmichael
  • The Ether Theory Again Refuted.... By Harry Simon
  • Behind The Scenes Of News Gathering... By Albert A. Hopkins
  • The Hottest Place In The Universe.... By Henry Norris Russell
  • Electrical Aids To Blind Flying .... By Alexander Klemin
  • Are The Planets Populated?... By Edwin Lincoln Moseley
  • Africa's First National Park ... By Mary L, Jobe Akeley
  • Industry Looks To The Chemist... By D. H. Killeffer
  • How Stable Is The Earth's Crust?... By Hartan T. Station
  • Milk As A Control For Rickets.... By James A Tobe
  • Forest Conservation And False Alarms.. By Wilson Compton
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