title: [Tercentenary of the decree on smallpox (a page from the history of epidemiology)].
mesh_terms: D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D006801:Humans; D007883:Legislation, Medical / Q000266:history; D012425:Russia (Pre-1917); D012899:Smallpox / Q000266:history*
vernacular_title: Trekhsotletie ukaza ob ospe (stranitsa istorii épidemiologii).