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Pour qu’un développement soit durable, il convient d’isoler certaines terres et de les déclarer zones protégées.

This report reviews the morphology, climate, geology; natural resources; coastal erosion; ornithological importance; fish and fisheries; institutional considerations; and ethnographic aspects of the Danube Delta.

There is today a growing awareness that many wetlands are more valuable in their natural, or only slightly modified state, than if drained, dyked or built upon.

This four volume directory was published for the IVth World Parks Congress held in Caracas, Venezuela, in February 1992, by the World Conservation Monitoring Centre (WCMC) and IUCN in cooperation with the British Petroleum Company p.l.c.

The directory aims to provide extensive background information on the protected area systems of the world, and to stimulate the continual process of review and update of information on protected areas.

This checklist gives information on a number of species of Cactaceae included in Appendices I and II of CITES regarding their identification, nomenclature and distribution. It is a first step towards a better implementation of CITES for this group of plants.

The findings of a survey of the Nile crocodile (Crocodylus niloticus) in six east/central African countries and Madagascar conducted from 1987 to 1989 are presented.