Vol. 20 No. #555
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More Stories from the November 28, 1931 issue

  1. Public May Be Misled by Vitamin Advertising

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  2. New Process Saves Fruit by Detecting Minute Scratches

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  3. “Making Weather” Hailed as Big Industry of Future

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  4. [Photograph]: Trees Swallowing Boards

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  5. Universe Pulsating in Cycles Seen by American Scientist

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  6. Discovery Made That Liver Conserves Heat of Body

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  7. American Thanksgiving Plants Fifty Years after Columbus: “A Classic of Science”

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  8. New Drug Treatment Gives Hope for Relieving Insanity

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  9. In Science Fields

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  10. Pavement Stop Signs Have Letters Shaped Wrongly

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  11. Clouds Make Day Bright When Sun Is Partly Hidden

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  12. 1931 Leonids Best in Years, Many Astronomers Report

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  13. Action of Steel under Stress Revealed in Writing on Sand

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  14. Coal in Small Doses Stimulates Plant Growth

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  15. Lean Indians to Eat Surplus Park Buffaloes

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  16. Artificial Limbs Made from Seamless Metal Tube

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  17. Ink Absorbing X-Rays Aids in Identification

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  18. Bubbling Sand Separates Coal from Heavier Slate

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  19. Nature Ramblings: Potted Plants

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  20. Bendien Cancer Test Called Unreliable

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  21. First Glances at New Books

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  22. Front Matter

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  23. Bacteria May Have Helped in Formation of Anthracite

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  24. [Photograph]: Rocky Mountain Reptiles of Sixty Million Years Ago

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