Bingham, J.; Jacobs, Jeanette Antonio; Jaftha, Julian Bernard(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
Abu Elzein, E.M.E.; Aitchison, Henry; Al-Afaleq, A.I.; Al-Bashir, A.M.; Ibrahim, A.O.; Housawi, F.M.T.(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
Mushi, E.Z.; Isa, J.F.W.; Chabo, R.G.; Binta, M.G.; Kapaata, R.W.; Ndebele, R.T.; Chakalisa, K.C.(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
Fitzgerald, S.L.; Greyling, J.M.; Bragg, R.R. (Robert Richard)(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)