Gramatica de la Lengua Quechua y vocabulario Quechua - Castellano, Castellano - Quechua de las voces mas usuales.
Urioste, Jorge.
Herrero, Joaquin.
La Paz, 
1955.
Joint authors: Jorge Urioste and Joaquin Herrero.
Pp. 1-22 are inserted between pp. 6 and 7.