Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Oberem, P.T.; Bezuidenhout, J. Dürr(Published by the Government Printer, Pretoria., 1987)
Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Oberem, P.T.; Bezuidenhout, J. Dürr(Published by the Government Printer, Pretoria., 1987)
Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Van Amstel, S.R.; Oberem, P.T.(Published by the Government Printer, Pretoria., 1987)
Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Van Amstel, S.R.; Reyers, Fred; Oberem, P.T.; Killeen, Valerie M.; Matthee, O.(Published by the Government Printer, Pretoria., 1987)
Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Du Plessis, J.L.; Camus, E.; Oberem, P.T.; Malan, Letitia(Published by the Government Printer, Pretoria., 1987)