Mungube E O, Wamae L W, Omondi G A and Mwangi G 2015: Prevalence of multiple resistant Haemonchus and Ostertagia species in goats and cattle in Machakos, Eastern Kenya. Livestock Research for Rural Development. Volume 27, Article #237. Retrieved , from http://www.lrrd.org/lrrd27/12/mung27237.htm