[30th anniversary of the science of natural foci of diseases (E. N. Pavlovskiĭ)].
D000818:Animals; D004197:Disease Reservoirs / Q000266:history; D004199:Disease Vectors; D004813:Epidemiology / Q000266:history*; D049673:History, 20th Century; D014586:USSR; D015047:Zoonoses / Q000266:history
K 30-letiiu ucheniia o prirodnoĭ ochagovosti bolezneĭ.