[Professor Doctor Petr Evimovich Verbev--founder of Bulgarian epidemiology (on his 80th birthday)].
D002031:Bulgaria; D004813:Epidemiology / Q000266:history; D049673:History, 20th Century
Professor doktor Petr Evfimovich Verbev--osnovopolozhnik bolgarskoĭ épidemiologii (k 80-letiiu so dnia rozhdeniia.