@inbook {, title = {La avifauna del Colca - Birdlife in the Colca}, booktitle = {Descubriendo el Valle del Colca - Discovering the Colca Valley}, year = {1987}, note = {Mauricio de Roma{\~n}a, Jaume Blassi, Jordi Blassi ; pr{\'o}logo de Mario Vargas Llosa.ill. (chiefly col.) ; 30 cm.Spanish and English.English translation by Ruth Gore.Includes indexes.}, pages = {77-79}, publisher = {F.O. Patthey}, organization = {F.O. Patthey}, address = {Barcelona}, keywords = {Colca River Valley (Arequipa, Peru) Description and travel., Peru) Pictorial works.}, isbn = {8440404433}, author = {Hughes, Robin R.}, editor = {Roma{\~n}a, Mauricio de and Blassi, Jaime and Blassi, Jorge} }