982 resultados para Colorado, U.S.A., North America
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"Second edition."
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v. 1. Introduction.--v. 2. Text.--v. 3. Appendixes.
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Mode of access: Internet.
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At head of title: Prize essay.
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Mode of access: Internet.
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Folded card at back: Field card of all birds occurring annually in the southwest.
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Pts. 1-8, 1901-19 by Robert Ridgway; pt. 9-10, 1941-46 by Robert Ridgway, completed by Herbert Friedmann; pt. 11- , 1950- by Friedmann.
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Mode of access: Internet.
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Includes bibliographical references (p. 101-102).
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Cover title: Mexico
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Cover title.