[AN OUTSTANDING EPIDEMIOLOGIST AND HYGIENIST OF THE 19TH CENTURY. (ON THE 100TH ANNIVERSARY OF THE DEATH OF R.S. CHETYRKIN)].
D000846:Anniversaries and Special Events; D004813:Epidemiology; D049672:History, 19th Century; D006920:Hygiene; D008511:Medicine
BIOGRAPHIES; EPIDEMIOLOGY; HISTORY; HISTORY OF MEDICINE, 19TH CENT.; HYGIENE
VYDAIUSHCHIISIA EPIDEMIOLOG I GIGIENIST XIX VEKA (K 100-LETIIU SO DNIA SMERTI R.S. CHETYRKINA)