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Pough, Frederick H.
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1996
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Menzel, Donald Howard, 1901- Pasachoff, Jay M.
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1983
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Petrides, George A. National Audubon Society. National Wildlife Federation. Roger Tory Peterson Institute.
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1998 1988
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2000
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Foster, Steven, 1957- Duke, James A., 1929-
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2000
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2000
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