By:
Pough, Frederick H.
Publication Date:
1976
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Burt, William Henry, 1903- Grossenheider, Richard Philip.
Publication Date:
1976
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Peterson, Lee. Peterson, Roger Tory, 1908-1996.
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1977
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Books
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Harrison, Hal H. National Audubon Society. National Wildlife Federation. Roger Tory Peterson Institute.
Publication Date:
1975
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Peterson, Roger Tory, 1908-1996.
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1980
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Burt, William Henry, 1903-
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1976 1952
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Schaefer, Vincent J. Day, John A.
Publication Date:
1981
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