Convention on Wetlands of International Importance especially as Waterfowl Habitat, Ramsar 2.2.71, as amended by the Paris protocol of 3.12.82 and the Amendments of 28.5.1987
| Μορφή: | Βιβλίο |
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| Έκδοση: |
Director, Office of International Standards and Legal Affairs and United Nations Educational, Scientific and Cultural Organization (UNESCO)
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| Διαθέσιμο Online: | Ramsar Convention on Wetlands |
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