Robert S. Ridgely
Popular items by Robert S. Ridgely
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A Guide to the Birds of Panama: With Costa Rica, Nicaragua, and Honduras
Ridgely, Robert S.; Jr., John A Gwynne
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The Birds of Ecuador Field Guide
Robert S. Ridgely
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The Birds of South America: Volume 1: The Oscine Passerines
Robert S. Ridgely; Guy, Tudor
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Wildlife Conservation Society Birds of Brazil: The Atlantic Forest of Southeast Brazil, including São Paulo and Rio de Janeiro (WCS Birds of Brazil Field Guides) (VOLUME 2)
Ridgely, Robert S.; Gwynne, John A.; Tudor, Guy; Argel, Martha
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Field Guide to the Songbirds of South America: The Passerines (Mildred Wyatt-Wold Series in Ornithology)
Ridgely, Robert S.; Tudor, Guy
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The Birds of South America: Vol. II, The Suboscine Passerines
Ridgely, Robert S.; Tudor, Guy
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The Birds of Ecuador: Status, Distribution, and Taxonomy
Ridgely, Robert S.; Greenfield, Paul J.
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