Παρόμοια τεκμήρια: Cold weather movements of waterfowl in Western Europe
- Global overview of the conservation of migratory arctic breeding birds outside the Arctic
- Corridors of the Pan-European Ecological Network
- An Atlas of wader populations in Africa and western Eurasia
- Western palearctic waterfowl cencus 1992
- Midwinter wildfowl census in the Western Greece 1991
- Atlas of anatidae populations in Africa and Western Eurasia