title: [80th birthday of Nikolaĭ Nikolaevich Sirotinin].
mesh_terms: D049672:History, 19th Century; D049673:History, 20th Century; D010827:Physiology / Q000266:history; D014586:USSR
vernacular_title: K 80-letiiu so dnia rozhdeniia Nikolaia Nikolaevicha Sirotinina