[Diphtheria and prophylactic measures in Rovigo; statistics and cases over a period of 20 years].
D001699:Biometry; D004165:Diphtheria / Q000453:epidemiology*; D006801:Humans
DIPHTHERIA/epidemiology
Difterite e misure profilattiche in Rovigo; statistica e osservazione di 20 anni.