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Color standards and color nomenclature / Robert Ridgway
Author: Ridgway, Robert
Call no: 752 RID
Year: 1912
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Nomenclature of North American birds chiefly contained in the United States National Museum
Author: Ridgway, Robert; United States National Museum
Year: 1881
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The birds of north and middle America : a descriptive catalogue
Author: Ridgway, Robert
Year: 1919
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The birds of north and middle America : a descriptive catalog
Author: Ridgway, Robert; Friedmann, Herbert
Year: 1941
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The birds of north and middle America : a descriptive catalog
Author: Ridgway, Robert; Friedmann, Herbert
Year: 1946
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The birds of north and middle America : a descriptive catalog
Author: Ridgway, Robert; Friedmann, Herbert
Year: 1950
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Note on Pachyrhamphus albinucha, Burmeister.
Author: Ridgway, Robert
Call no: RP2358
Year: 1891
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Notes on the genus Sittasomus of Swainson.
Author: Ridgway, Robert
Call no: RP2359
Year: 1891
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Description of two new forms of Basileuterus rufifrons, from Mexico.
Author: Ridgway, Robert
Call no: RP2360
Year: 1892
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Descriptions of twenty-two new species of birds from the Galapagos Islands.
Author: Ridgway, Robert
Call no: RP2371
Year: 1894
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