Dr. Robert Koch, Professor und Geheimrat, Original-Holzstich von 1890 | eBay
RKI - Robert Koch
Portrait, Heliogravüre nach Photo, 18 x 26 cm. by Koch, Robert =: (1630) Art / Print / Poster | Antiq. F.-D. Söhn - Medicusbooks.Com
Physiology or Medicine 1905 - Presentation Speech - NobelPrize.org
RAREFILMSANDMORE.COM. ROBERT KOCH, DER BEKAMPFER DES TODES (1939)