Mushi, E.Z.; Binta, M.G.; Chabo, R.G.; Ndebele, R.; Panzirah, R.(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute ., 2000)
Mushi, E.Z.; Binta, M.G.; Chabo, R.G,; Ndebele, R.; Panzirah, R.(Published jointly by the Agricultural Research Council, ARC-Onderstepoort Veterinary Institute and the Faculty of Veterinary Science, University of Pretoria., 2001)