The environmental revolution : a guide for the new masters of the world
1970
Nicholson, Max |
Nature conservation
Australia's 100 years of national parks
Goldstein, Wendy |
College of African Wildlife Management, Mweka : an example of international cooperation in the management and conservation of African wildlife
1981
Nyahoza, F. |
Principes et historique de la conservation de la nature, 1933-1963
Dekeyser, P. L. |
A Sand County almanac and sketches here and there
1989
Leopold, Aldo |
Register of European environmental and nature conservation study centres
1990
Szalay-Marzsó, Enikö |
Avant que nature ne meure
1965
Dorst, Jean |