Bodenlos, Alfred J. Base-metal deposits of the Cordillera Negra, departamento de Ancash, Peru - Washington, D.C. Government Printing Office 1957 - 165 p. ilus., maps. - U.S. Geological Survey Bulletin n.1040 . Subjects--Topical Terms: GEOLOGIA ECONOMICAMETALES BASEYACIMIENTOS MINERALES Subjects--Geographic Terms: ANCASHCORDILLERA NEGRAPERU Universal Decimal Class. No.: P/553.4(851.7)/B65