Viljoen, P.J.

Le Roux, N.; Dreyer, C.; Viljoen, P.J.; Hofmeyr, M.; Ferreira, S. 2019. Seasonal space-use and resource limitation in free-ranging black rhino. Mammalian Biology 99: 81-87. doi.org/10.1016/j.mambio.2019.11.001

Viljoen, P.J. 1992. Aerial census to gauge population trends. Custos 21 (4): 42-46, figs. 1-2.

Clements, B.; Loutit, B.D.; Owen-Smith, G.; Viljoen, P.J. 1984. A trust to fight for desert wildlife in Namibia. Oryx 18 (4): 215-217, figs. 1-3, map 1.

Viljoen, P.J. 1982. The distribution and population status of the larger mammals in Kaokoland, South West Africa/Namibia.. Cimbebasia (A) 7 (2): 5-33, figs. 1-10.

Viljoen, P.J. 1982. Aerial game census. Report to Namibia Wildlife Trust. pp. 1-31.

Viljoen, P.J. 1982. The ecology of the desert-dwelling elephants, black rhinoceroses and giraffes of western Kaokoland and Damaraland, South-West Africa. Progress Report to Namibia Wildlife Trust No.4: 1-7.

Viljoen, P.J. 1981. The ecology of the desert-dwelling elephants, black rhinoceroses and giraffes of western Kaokoland and Damaraland, South-West Africa. Progress Report No. 2 to Namibia Wildlife Trust. pp. 1-5.