Rabies in Southern and Eastern Africa. Workshop. (1993, Pretoria, South Africa); Anonymous(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1993)
Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Du Plessis, J.L.; Malan, Letitia; Kowalski, Z.E.(Published by the Government Printer, Pretoria., 1987)