title: Principal helminthozoonoses of the population of the northern districts of the USSR.
mesh_terms: D000818:Animals; D002335:Carnivora; D004169:Diphyllobothriasis / Q000453:epidemiology; D004197:Disease Reservoirs; D004443:Echinococcosis / Q000453:epidemiology; D005399:Fishes; D005589:Foxes; D006373:Helminthiasis / Q000453:epidemiology*; D006801:Humans; D051379:Mice; D008974:Mollusca; D009889:Opisthorchiasis / Q000453:epidemiology; D051381:Rats; D012377:Rodentia; D014235:Trichinellosis / Q000453:epidemiology; D014586:USSR; D014871:Water Microbiology; D015047:Zoonoses