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1by Anderson, KurtSubjects: “...Black duck -- Migration -- United States...”
Published 2013
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2by Collins, Roanne K. (Roanne Kyla).“...Duck Islands...”
Published 2010
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6by Ölvir Styrmisson 1994-“... hávella YKD og annarra hávella ekki mjög mikil. Many populations of the long-tailed duck (Clangula...”
Published 2017
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