[Centennary of the birth of Zakhar Grigor'evich Frenkel'].
D003710:Demography / Q000266:history; D005853:Geriatrics / Q000266:history; D049672:History, 19th Century; D049673:History, 20th Century; D011634:Public Health / Q000266:history; D012425:Russia (Pre-1917); D014586:USSR
K 100-letiiu so dnia rozhdeniia Zakhara Grigor'evicha Frenkelia.