Koepcke, Maria.Koepcke, Hans Wilhelm.2005-10-062005-10-061961http://hdl.handle.net/2246/539531 p. ; 24 cm.Includes bibliographical references (p. 28-31).2765303 bytesapplication/pdfen-USQL1 .A436 no.2028, 1961Birds -- Peru -- Cordillera OccidentalBirds -- Peru -- Geographical distribution.Birds of the western slope of the Andes of Peru. American Museum novitates ; no. 2028Birds of western Andestext