[Ecological principles of epizootiology].
D000820:Animal Diseases / Q000517:prevention & control; D000818:Animals; D003141:Communicable Diseases / Q000662:veterinary*; D004196:Disease Outbreaks / Q000662:veterinary; D004463:Ecology; D004467:Economics; D014586:USSR
Ekologicheskie printsipy épizootologii.