[Petr Stepanovich Kupalov (on the centenary of his birth)].
D000818:Animals; D006613:Higher Nervous Activity; D049673:History, 20th Century; D006801:Humans; D010827:Physiology / Q000266:history; D014586:USSR
Petr Stepanovich Kupalov (k 100-letiiu so dnia rozhdeniia).