[Role of L.K. Khotsianov in the activities of the congresses of hygienists and sanitary inspectors].
D003226:Congresses as Topic / Q000266:history; D004813:Epidemiology / Q000266:history*; D049673:History, 20th Century; D012499:Sanitation / Q000266:history*; D014586:USSR
Uchastie L.K. Khotsianova v rabote s'ezdov gigienistov i sanitarnykh vracheĭ.