0 Alvavaldes, R. Wallace, D. H. Holste, J. E. Egerton, J. R. Cox, J. L. Wooden, J. W. Barrick, R. A. 1986 Efficacy of Ivermectin in a topical formulation against induced gastrointestinal and pulmonary nematode infections, and naturally acquired grubs and lice in cattle American Journal of Veterinary Research 47 11 2389-2392 38178 control Journal