Stärk, K D Veterinary epidemiology--a key to sustainable pig production in Switzerland. [electronic resource] - Schweizer Archiv fur Tierheilkunde Feb 2001 - 63-8 p. digital Publication Type: Journal Article ISSN: 0036-7281 Subjects--Topical Terms: Animal HusbandryAnimal WelfareAnimalsModels, TheoreticalPneumonia--epidemiologyRisk AssessmentSwineSwine Diseases--epidemiologySwitzerland--epidemiology