01121nam a2200193Ia 4500 CTU_126531 210402s9999 xx 000 0 und d 639.97841 A832 The Asian waterfowl census 1987-91 : Distribution and status of Asian waterfowl edited by Christian Perennou ; cartography by Arne Follestad and Lars Kvenild. Gloucester, UK International Waterfowl and Wetlands Research Bureau 1994 This document presents the findings of the most comprehensive census ever carried out on Asian waterfowl. Over 3,000 wetlands in 32 countries were assessed; distribution maps for 200 commonly recorded species are presented, with the most important sites identified for each species; sites of international importance using the Ramsar 1% criterion are also identified. Some 496 wetlands were identified as being of international importance. A key conservation document for the region. Water birds,Chim Huỳnh Mai Trung tâm Học liệu Trường Đại học Cần Thơ