title: Parasites of Ovis canadensis canadensis in Montana, with a checklist of the internal and external parasites of the Rocky Mountain bighorn sheep in North America.
mesh_terms: D000818:Animals; D001181:Arthropods; D002590:Cestode Infections / Q000662:veterinary*; D004539:Eimeria; D007411:Intestinal Diseases, Parasitic / Q000662:veterinary*; D009009:Montana; D009349:Nematode Infections / Q000662:veterinary*; D009656:North America; D011529:Protozoan Infections, Animal; D012756:Sheep; D012757:Sheep Diseases; D013270:Stomach / Q000382:microbiology*