Earthcare : global protection of natural areas : proceedings of the fourteenth biennial wilderness conference
1978
Schofield, Edmund A. |
Nature conservation
Protection et conservation des richesses naturelles de la Corse
Bourlière, François |
Dorst, Jean |
Hoffmann, Lukas |
Molinier, Roger |
Pfeffer, Pierre |
Terrasse, Jean François |
Ausencia de San Francisco
Stutzin, Godofredo |
Presencia de San Francisco
1974
Stutzin, Godofredo |
Conservation in Africa : people, policies and practice
1989
Anderson, David |
Grove, Richard |
Earthcare : global protection of natural areas : program-journal
1975
Fauerbach, Vivien E. |
The meaning of wilderness to science : proceedings
1960
Brower, David |
Debt for nature swap : an instrument against debt and environmental destruction
1989
Schreiber, Helmut |