[Pneumonia and its role in infant mortality].
D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007226:Infant Mortality; D011014:Pneumonia / Q000453:epidemiology / Q000401:mortality*; D012425:Russia (Pre-1917); D014586:USSR; D014505:Urban Population
Pnevmonia i ee rol' v detskoĭ smertnosti