Convention on Wetlands of International Importance Especially as Waterfowl Habitat : Extraordinary Conference of the Contracting Parties, Paris, France, 2-3 December 1982 1982
Proceedings of the second conference of the parties to the Convention on Wetlands of International Importance especially as Waterfowl Habitat, Groningen, Netherlands, 7 to 12 May 1984 1984
