[Boris Aleksandrovich Petrov (on his 90th birthday)].
D000047:Academies and Institutes / Q000266:history; D013502:General Surgery / Q000266:history; D049673:History, 20th Century; D012577:Schools, Medical / Q000266:history; D014586:USSR
Boris Aleksandrovich Petrov (k 90-letiiu so dnia rozhdeniia).