Developments in control of ectoparasites of livestock.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000517:prevention & control*; D004478:Ectoparasitic Infestations / Q000517:prevention & control* / Q000662:veterinary*; D007306:Insecticides / Q000494:pharmacology*; D012756:Sheep; D012757:Sheep Diseases / Q000517:prevention & control*
D007306:Insecticides