Vol. 58 No. #4
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More Stories from the July 22, 1950 issue

  1. Color Photos Made Quickly

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  2. Nature Ramblings: Toads and Frogs

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  3. Report on Antihistamines

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  4. Thorium Usefulness Proved

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  5. Books of the Week

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  6. Educational Steps in Point Four Program

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  7. New Machines and Gadgets

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  8. Front Matter

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  9. Competition for the Bee

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  10. No Worthwhile Target for A-Bomb in North Korea

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  11. Eight Million Men of Draft Age

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  12. Membrane of Tiny Plant Cells Found to Be Porous

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  13. Nerve Gases vs. Insects

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  14. Mechanical Kidney

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  15. Unseen Distant Galaxy May Prove Relativity Theory

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  16. USSR Subs Threaten Korea

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  17. Puerto Rico Waters Land

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  18. Vanilla May Soon Come from Cultivated Plants

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  19. Must Understand Ear to Know Why Hearing Is Lost

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  20. Plankton, Fish Food, May Become Human Food

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  21. From Now on: Fuels

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  22. Bad TV Installations Are Fire-Lightning Hazards

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  23. Carrier Safely Handles Radioactive Materials

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  24. Thunderstorms No Menace to Planes

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  25. [Photograph]: Formula for Coolness

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  26. In Science Fields

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  27. Jupiter Comes into View

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  28. Mercuric Chloride for Better Watered Farms

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  29. Frigidity in Women

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  30. Air Navigation Aid

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  31. Vitamin Diet: Codfish Livers and Cod Liver Oil

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  32. Supersonic Plane Pilots Need Electric Eyes

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  33. Man-Made ACTH Soon

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  34. Weeds Fight 2,4-D

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  35. Artificial Meteors from Bazooka-like Experiment

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