Letter: Pour-on insecticides for the control of Lignognathus vituli.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000188:drug therapy*; D004478:Ectoparasitic Infestations / Q000188:drug therapy / Q000662:veterinary*; D005284:Fenthion / Q000627:therapeutic use; D007306:Insecticides / Q000627:therapeutic use*; D009946:Organothiophosphorus Compounds / Q000627:therapeutic use; D008003:Phthiraptera
D007306:Insecticides; D009946:Organothiophosphorus Compounds; D005284:Fenthion