Gastrointestinal parasites of swine in Québec. I. An incidence survey.
D000818:Animals; D005767:Gastrointestinal Diseases / Q000453:epidemiology / Q000662:veterinary*; D009349:Nematode Infections / Q000453:epidemiology / Q000662:veterinary*; D011792:Quebec; D013552:Swine; D013553:Swine Diseases / Q000453:epidemiology*