Robert Koch - Wikipedia
Robert Koch (1843–1910): Die Entdeckung des Tuberkelbazillus
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Asociación Argentina de Microbiología
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Tuberkulose: Triumph und Niederlage des Robert Koch - Wissen - FAZ
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Robert Koch – Wikipedia
Mengenal Jerman Robert Koch dan Temuannya di Dunia Mikroba | Republika Online
Stamp: Robert Koch & TBC-pathogen (Uganda) (100th Anniversary of the Discovery of Bacillus) Mi:UG 322,Sn:UG 335,Yt:UG 282,Sg:UG 372
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Tuberkulose Abteilung - Gesundheitsamt Darmstadt
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Robert Koch - Wikipedia, la enciclopedia libre
