Studies on the incidence of gastrointestinal helminths of cattle in Quebec.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology*; D005243:Feces; D005767:Gastrointestinal Diseases / Q000453:epidemiology / Q000662:veterinary*; D009349:Nematode Infections / Q000453:epidemiology / Q000662:veterinary*; D010270:Parasite Egg Count; D011792:Quebec; D012621:Seasons