[Epidemiologic circumstances in the Lifland province and Riga during the period of Czarist autocracy (the end of the 19th and beginning of the 20th centuries)].
D003140:Communicable Disease Control / Q000266:history*; D004196:Disease Outbreaks / Q000266:history; D049672:History, 19th Century; D049673:History, 20th Century; D007844:Latvia; D012425:Russia (Pre-1917)
Epidemicheskaia obstanovka v Liflianskoĭ gubernii i Rige v period tsarskogo samoderzhaviia (konets 19th--nachalo 20th veka.