The Drakensberg of Natal
1972
Liebenberg, Doyle P. |
Protected areas
Los espacios naturales protegibles su conservación, regulación legal e incidencia en la ordenación del territorio
1990
Paluzie i Mir, Lluís |
Wildlife in the Mekong basin
1975
McNeely, Jeffrey A. |
Conservation for tropical rain forest in Liberia : recommendations for wildlife conservation and national parks
1983
Verschuren, Jacques |
Australia's 100 years of national parks
Goldstein, Wendy |