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Scientific American

February 1, 1990

1 min read

50 and 100 Years Ago: February 1990

Articles from the Scientific American archive.

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This article was originally published with the title “50 and 100 Years Ago” in Scientific American Magazine Vol. 262 No. 2 (February 1990), p. 10
doi:10.1038/scientificamerican0290-10

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