O'Brien, D J Evaluation of the persistent activity of injectable endectocides against Psoroptes ovis. [electronic resource] - The Veterinary record Oct 2001 - 522-3 p. digital Publication Type: Clinical Trial; Journal Article ISSN: 0042-4900 Standard No.: 10.1136/vr.149.17.522 doi Subjects--Topical Terms: AnimalsAnti-Bacterial Agents--administration & dosageFemaleInjections, IntramuscularInjections, SubcutaneousInsecticides--administration & dosageIvermectin--administration & dosageMacrolidesMite Infestations--drug therapySheepSheep Diseases--drug therapyTime FactorsTreatment Outcome