Science News-Letter

February 22, 1930

 Some of the articles inside are: Theory proposed on cause of cancer; Thyroid sets the pace; What do heat and humidity make people do; ice age turkeys; The regeneration of earthworms - a science classic; Parrot fever claims medical martyrs; Stone age tribe is like modern Americans;  ; 

Be sure and check our listings for Scientific American and Scientific American Supp, Mechanix Illustrated. Popular Mechanics and Popular Science. .

Chosen Reflections/ Million Magazines, Kaufman Texas 75142.

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