[Virusological considerations on the epidemic of influenza in Sofia in 1952-55].
D058872:Epidemics; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology*
INFLUENZA/epidemiology
Virusologichni prouchvaniia na gripnite epidemii v Sofiia prez perioda 1952-1955 god.