The distribution of bird life in the Urubamba Valley of Peru. A report on the birds collected by the Yale University-National Geographic Society's Expeditions
Open Access
- 1 January 1921
- journal article
- Published by Smithsonian Institution in Bulletin of the United States National Museum
- No. 117,p. 1-138
- https://doi.org/10.5479/si.03629236.117.1
Abstract
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