title: [The "freedom reflex" of Ivan Petrovich Pavlov].
authors.forename: V O
authors.initials: VO
authors.lastname: Samoĭlov
mesh_terms: D000818:Animals; D003214:Conditioning, Classical / Q000502:physiology; D004285:Dogs; D049672:History, 19th Century; D049673:History, 20th Century; D010827:Physiology / Q000266:history; D012425:Russia (Pre-1917); D014586:USSR