Allen, Jr, Hubert A
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1991: Wildfowl Special Issue No. 1 - SECTION ONE: DISTRIBUTION AND STATUS
Winter distribution of Tundra Swans Cygnus columbianus breeding in Alaska and Western Canadian Arctic
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1991: Wildfowl Special Issue No. 1 - SECTION SEVEN: MANAGEMENT AND CONSERVATION
Methods of band survival analysis applied to studies of the Tundra Swan Cygnus columbianus
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