[Studies on the Gymnophallid trematodes of the North Sea. I. The alternative life-cycles of Gymnophallus choledochus Odhner, 1900].
D000818:Animals; D001717:Birds; D004372:Ducks; D004463:Ecology; D014200:Trematoda / Q000254:growth & development*
Zur Kenntnis der gymnophalliden Trematoden des Nordseeraumes. I. Die Alternativ-Zyklen von Gymnophallus choledochus Odhner, 1900.