[Regional differences in infant mortality (Italy, United States, Great Britain, USSR, Czechoslovakia].
D003604:Czechoslovakia; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007558:Italy; D014586:USSR; D006113:United Kingdom; D014481:United States
Le differenze regionali della mortalità infantile (Italia, Stati Uniti d'America, Gran Bretagna, URSS, Cecoslovacchia.