L'Agonia della terra
1974
Pavan, Mario |
Nature conservation
The World Charter for Nature : a background paper
1983
Burhenne, Wolfgang E. |
Irwin, William A. |
The World Charter for Nature. Part 1. Legislative history - Part 2. Commentary
1986
Burhenne, Wolfgang E. |
Irwin, William A. |
Culture and conservation : the human dimension in environmental planning
1985
McNeely, Jeffrey A. |
Pitt, David |
