Greylag goose : anser anser : (Iceland population) in Britain and Ireland 1960/61-1999/2000 /
Hearn, Richard,1971-
Mitchell, Carl.
Joint Nature Conservation Committee (Great Britain)
Wildfowl & Wetlands Trust.
Slimbridge : WWT ; Peterborough : Joint Nature Conservation Committee,
[2004].
Includes bibliographical references.
Greylag goose
Bird surveys