[S.P. Protopopov (on his 70th birthday)].
D000368:Aged; D013502:General Surgery / Q000266:history; D049673:History, 20th Century; D006801:Humans; D008887:Military Medicine / Q000266:history; D009482:Neurophysiology / Q000266:history; D014586:USSR
S.P. Protopopov (K 70-letiiuso dnia rozhdeniia)