Towards the wise use of wetlands : report of the Ramsar Convention Wise Use Project - Davis, Tim J. (Gland, Switzerland : Ramsar Convention Bureau, 1993)
A la cabeza de la portada: Convention on Wetlands of International Importance Especially as Waterfowl Habitat (Ramsar 1971)--Impreso en Gloucester, UK
Keywords: CONSERVACION DE HUMEDALES