title: Studies on the ecology of the papillose allocreadiid trematodes of the yellow perch in Algonquin Park, Ontario.
mesh_terms: D000818:Animals; D004463:Ecology; D005393:Fish Diseases / Q000453:epidemiology*; D005399:Fishes; D014200:Trematoda / Q000302:isolation & purification; D014201:Trematode Infections / Q000453:epidemiology / Q000662:veterinary*