[On the 80th birthday of F. G. Krotkov].
D049672:History, 19th Century; D049673:History, 20th Century; D008887:Military Medicine / Q000266:history; D011835:Radiation Protection; D012425:Russia (Pre-1917); D014586:USSR
K 80-letiiu so dnia rozhdeniia F. G. Krotkova