title: [Petr Iakovlevich Mytnik (the 1st anniversary of his death and the 80th anniversary of his birth) (October 27, 1889--June 27, 1968)].
mesh_terms: D049673:History, 20th Century; D009787:Occupational Medicine / Q000266:history; D014586:USSR
vernacular_title: Petr Iakovlevich Mytnik (k godovshchine smerti i 80-letiiu so dnia rozhdeniia) (27-X 1889 g.--27-VI 1968 g)