Managing wetlands and their birds : a manual of wetland and waterfowl management : proceedings of the Third Technical Meeting on Western Palearctic Migratory Bird Management, held at the Biologische Station Rieselfelder Münster ...12-15 October 1982 /
Technical Meeting on Western Palearctic Migratory Bird Management3rd1982Münster.
Scott, D. A.
Slimbridge International Waterfowl Research Bureau
1982