Walker, Clive H. “Black rhino on private land–the experience of Lapalala Wilderness, South Africa.” Proceedings of a South African Veterinary Association Symposium on Rhinos as Game Ranch Animals. Veterinary Research Institute, Onderstepoorts, 1994.

Walker, Clive H. “Black rhino on private land–the experience of Lapalala Wilderness, South Africa.” Proceedings of a South African Veterinary Association Symposium on Rhinos as Game Ranch Animals. Veterinary Research Institute, Onderstepoorts, 1994.