Agenda 21 programme of action for sustainable development ; Rio Declaration on Environment and Development ; Statement of Forest Principles
| Erakunde egilea: | |
|---|---|
| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
New York, N.Y.
United Nations Dept. of Public Information
1997.
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| Gaiak: |