[The centennial of Prof. Johann Jakob Rychner's death].
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000266:history; D049672:History, 19th Century; D013557:Switzerland; D013663:Teaching / Q000266:history; D014730:Veterinary Medicine / Q000266:history
Zum hundertsten Todestag von Johann Jakob Rychner.