Zimmer, John T. (John Todd), 1889-1957.2005-10-062005-10-061937http://hdl.handle.net/2246/384516 p. ; 24 cm.Includes bibliographical references.1766665 bytesapplication/pdfen-USQL1 .A436 no.917, 1937Birds -- PeruBirds -- South AmericaStudies of Peruvian birds. No. 25, Notes on the genera Thamnophilus, Thamnocharis, Gymnopithys, and Ramphocaenus. American Museum novitates ; no. 917Notes on the genera Thamnophilus, Thamnocharis, Gymnopithys, and RamphocaenusStudies of Peruvian birds.text