Haapanen, Antti
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1991: Wildfowl Special Issue No. 1 - SECTION TWO: POPULATION STUDIES
Whooper Swan Cygnus c. cygnus population dynamics in Finland
Abstract PDF -
1991: Wildfowl Special Issue No. 1 - SECTION FOUR: MIGRATION
Bimodality of spring migration of the Whooper Swan Cygnus cygnus in Finland
Abstract PDF