title: [Various principles of circulation of parasites in the biocenosis].
mesh_terms: D000818:Animals; D001001:Anura / Q000469:parasitology; D004463:Ecology; D005399:Fishes / Q000469:parasitology; D005618:Fresh Water; D006376:Helminths / Q000502:physiology*; D006790:Host-Parasite Interactions; D011044:Poland; D012908:Snails / Q000469:parasitology
vernacular_title: Niektóre prawidłowości krazenia pasozytów w biocenozie.