[N.Kh. Ketcher--physician and active society member (on the centenary of his death)].
D013502:General Surgery / Q000266:history; D049672:History, 19th Century; D006809:Humanities; D012425:Russia (Pre-1917); D012952:Societies / Q000266:history
N.Kh. Ketcher--vrach, obshchestvennyĭ deiatel' (k 100-letiiu so dnia smerti).