Θέμα: Ελβετία 1990
Θέμα: Οικολογία
Συγγραφέας: Meeting of the Conference of the Contracting Parties to the Convention on Wetlands (Ramsar) (4th : 1990 : Montreux, Switzerland)
Παρόμοια τεκμήρια: Conservation of wetlands in the Netherlands
- A Directory of wetlands of international importance
- Convention on wetlands of international importance especially as waterfowl habitat, Montreux, Switzerland 27 June to July 1990.
- Proceedings of the fourth Meeting of the Conference of the Contracting Parties
- Proceedings of the fourth Meeting of the Conference of the Contracting Parties
- Proceedings of the fourth Meeting of the Conference of the Contracting Parties
- La tourbiere des Tenasses sur Vevey