Harvey R B, Kubena L F, Corrier D E, Huff W E, Rottinghaus G E
USDA, Agricultural Research Service, Veterinary Toxicology and Entomology Research Laboratory, College Station 77840.
J Vet Diagn Invest. 1990 Jul;2(3):227-9. doi: 10.1177/104063879000200314.