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Scientific American

October 1, 1994

1 min read

50 and 100 Years Ago: Penicillin Production and Life on Mars?

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This article was originally published with the title “50 and 100 Years Ago” in Scientific American Magazine Vol. 271 No. 4 (October 1994), p. 12
doi:10.1038/scientificamerican1094-12

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