Keywords: Petr Borisovich Gannushkin c. 1930.jpg en Gannushkin Petr Borisovich 1875-1933 pl Gannuszkin Piotr Borisowicz 1875-1933 retrieved from http //ihm nlm nih gov/luna/servlet/view/search q B012624 Images from the History of Medicine NLM anonymous/unknown 1930 public domain due to its age Psychiatrists from Russia PD-old |