[Epidemiological characteristics of diphtheria in the Leningrad area in the postwar years (1946-1955)].
D004165:Diphtheria / Q000453:epidemiology*; D006801:Humans
DIPHTHERIA/epidemiology
Epidemiologicheskaia kharakteristika difterii v Leningradskoi oblasti v poslevoennye gody (1946-1955).