title: [Gyrodactylus medius Kathariner, 1894 (Monogenoidea: Gyrodactylidae), its variability, occurrence and distribution].
mesh_terms: D000818:Animals; D003530:Cyprinidae; D005399:Fishes; D014200:Trematoda / Q000033:anatomy & histology / Q000145:classification; D014586:USSR
vernacular_title: Gyrodactylus medius Kathariner, 1894 (Monogenoidea: Gyrodactylidae), ego izmenchivost', vstrechaemost' i rasprostranenie.