Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Van der Merwe, Lente(Published by the Government Printer, Pretoria., 1987)
Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Spickett, Arthur M.(Published by the Government Printer, Pretoria., 1987)
Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Barre, N.; Uilenberg, Gerrit; Morel, P.C.; Camus, E.(Published by the Government Printer, Pretoria., 1987)
Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); McHardy, N.; MacKenzie, P.K.I.(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); Vermeulen, N.M.J.(Published by the Government Printer, Pretoria., 1987)
Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Bezuidenhout, J. Dürr; Olivier, J.A.; Gruss, B.; Badenhorst, J.V.(Published by the Government Printer, Pretoria., 1987)