title: [Professor Felix Stanislavovich Okolov (100th anniversary of his birthday)].
authors.forename: S Kh
authors.initials: SKh
authors.lastname: Nikolov
authors.forename: P V
authors.initials: PV
authors.lastname: Nefedov
mesh_terms: D049673:History, 20th Century; D006920:Hygiene / Q000266:history; D007388:Internal Medicine / Q000266:history; D012425:Russia (Pre-1917); D012499:Sanitation / Q000266:history; D014586:USSR