1. Economic aspects of ectoparasites of cattle in North America;Drummond,1987
2. Effects of arthropod pests on livestock production;Drummond,1988
3. Estimated losses of livestock to pests;Kunz,1991
4. Parasitology: the biology of animal parasites;Noble,1973
5. Biology and control of cattle grubs;Scholl;Annu Rev Entomol,1993