title: Sheep ectoparasites in Wales.
authors.forename: Derek
authors.initials: D
authors.lastname: Armstrong
authors.forename: Lynfa
authors.initials: L
authors.lastname: Davies
mesh_terms: D000818:Animals; D004478:Ectoparasitic Infestations / Q000453:epidemiology / Q000662:veterinary*; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology* / Q000209:etiology / Q000469:parasitology; D011795:Surveys and Questionnaires; D014852:Wales / Q000453:epidemiology