Author: Chapman, Frank M., 1921.:
Title: The distribution of bird life in the Urubamba Valley of Peru. [U.S. Natl. Mus. Bull., 117.]
Description: Washington 1921 8vo. Pp. 138, fold. frontisp. map, 7 plates of photos of sdcenery, refs., index, Paperbound, orig. wrappers, uncut.

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