[Analysis of the incidence of influenza in the former warsaw province in 1971].
D000328:Adult; D000368:Aged; D004196:Disease Outbreaks / Q000453:epidemiology*; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology*; D008875:Middle Aged; D011044:Poland
Analiza zachorowań na grype w byłym województwie warszawskim w 1971 r.