Author: OJEDA RIVERA, JESUS; ROJAS LERMA, ELOY.
Title: Geologia y Depositos de Oro y Plata del Cerro de la Yesca, Municipio de Xichu, Guanajuato. Consejo de Recursos Naturales No Renovables. Ninos Heroes 139. Mexico 7. D. F. Boletin 67.
Description: First Edition; 8vo; pp. viii, 79; 10 folding maps at rear, 21 b/w illustrations within text, 8 tables, bibliography; original stiff printed wrapper, list of publications by Consejo de Recursos Naturales no Renovables included, institution stamp to front, a good copy. Consejo de Recursos Naturales No Renovables, Mexico, 1964. Text in Spanish.

Keywords: mining Mexico geology ore foreign language