title: Epizootiological and experimental studies of skin tumours in northern pike (Esox lucius L.) in the Baltic Sea.
mesh_terms: D000818:Animals; D005393:Fish Diseases / Q000453:epidemiology / Q000209:etiology; D005399:Fishes; D012878:Skin Neoplasms / Q000453:epidemiology / Q000209:etiology / Q000662:veterinary*; D013548:Sweden; D014876:Water Pollution