独占写真
クリエイティブ (RM)
#128576507
Marion Folsom, U.S. Secretary of Health, Education, and Welfare, presents the American microbiologist, Jonas Edward Salk (b.1914), with a medal in 1956. In the 40s, other microbiologists such as the American, Enders had developed new techniques to produce
署名: NYPL/Science Source
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