Burton, P J K
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The Wildfowl Trust Ninth Annual Report - Articles
Brent Geese in Essex - The proportion of first-winter birds in flocks of Brent Geese in Essex
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The Wildfowl Trust Tenth Annual Report - Articles
Brent Geese in Essex, 1957-1958
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The Wildfowl Trust Sixteenth Annual Report - Articles
Brent Geese in western Europe during the winters of 1962-63 and 1963-64
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