Θέμα: Υγρότοποι
Θέμα: Υδρόβια πουλιά
- African Waterbird Census 1998
- Atlas of anatidae populations in Africa and Western Eurasia
- Determing Priorities for Waterbird and Wetland Conservation
- African waterfowl census 1996
- Results from the International Waterbird Census in the Western Palearctic and Southwest Asia 1995 and 1996
- Wetlands, Biodiversity and Development