Galarza Alcántara, Othoniel Calpa - Lima Editora Perú 1981 - pp. 1027-1042 - t.4, v.3 . Subjects--Topical Terms: GEOLOGIA ECONOMICAOROYACIMIENTOS MINERALES Subjects--Geographic Terms: AREQUIPA Subjects--Index Terms: CALPA, MINA Universal Decimal Class. No.: P/622(85)/S19|66