On the emergence of diphtheria epidemics; Contribution to the question of the epidemiology of diphtheria.
D001699:Biometry; D004165:Diphtheria / Q000453:epidemiology* / Q000706:statistics & numerical data*
DIPHTHERIA/epidemiology and statistics
Zur Entstehung von Diphtherie-Epidemien; Beitrag zur Frage der Epidemiologie der Diphtherie.