Studies of Peruvian birds. No. 42, The genus Polioptila. American Museum novitates ; no. 1168

Zimmer, John T. (John Todd), 1889-1957.2005-10-062005-10-061942http://hdl.handle.net/2246/47247 p. ; 24 cm.Includes bibliographical references.1028207 bytesapplication/pdfen-USQL1 .A436 no.1168, 1942Gnatcatchers -- Classification.Birds -- PeruBirds -- South AmericaStudies of Peruvian birds. No. 42, The genus Polioptila. American Museum novitates ; no. 1168Genus PolioptilaStudies of Peruvian birds.text