[Valentin Ivanovich Pokrovskiĭ (on his 60th birthday)].
D000047:Academies and Institutes / Q000266:history; D003141:Communicable Diseases / Q000266:history; D004813:Epidemiology / Q000266:history; D049673:History, 20th Century; D009031:Moscow; D012577:Schools, Medical / Q000266:history; D014586:USSR
Valentin Ivanovich Pokrovskiĭ (k 60-letiiu so dnia rozhdeniia).