International Wildfowl Research Bureau, UK
Organization(s):
- International Wildfowl Research Bureau, UK
Organization(s):
- USSR, Ministry of Agriculture
- International Wildfowl Research Bureau, UK
Author(s):
- Kepp, Thomas
- Melter, Johannes
- Reinke, Eckhard
Organization(s):
- Deutsche Ornithologen-Gesellschaft, DE
- International Wildfowl Research Bureau, UK
- Biologische Station, DE
Organization(s):
- International Waterfowl Research Bureau
- International Wildfowl Research Bureau, UK
Organization(s):
- IUCN
- International Waterfowl Research Bureau
- UNESCO