Koch, Robert, - , German scientist (physician), in his laboratory, engraving, circa 1900,

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Photo credit: © INTERFOTO / Personalities / Alamy / Afripics
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Keywords: 1900s, 1905, 20th, bacteriologist, bacteriology, century, cholera, engraving, german, historic, historical, koch, laboratory, laureate, male, man, medicine, men, nobel, people, physician, prize, robert, scientist, tuberculosis