| Reference | {Deposit:: PURSER, W. F., 1971, METAL-MINING IN PERU PAST AND PRESENT:}{Deposit:: PRAEGER, NEW YORK, 339 PGS.}{Deposit:: HALEY, D., 1974, PERU-A SPECIAL RPT.: MINING ENGINEERING, AI}{Deposit:: Y., JAN., 1974, P. 17}{Deposit:: ENGINEERING AND MINING JR., 1975, WORLD ROUNDUP: MCGRAW HILL}{Deposit:: YORK, P. 81.}{Deposit:: MINING RECORD, 1974, ANNUAL REVIEW: P. 313.}{Deposit:: 1975 EMJ INTERNATIONAL DIRECTORY MCGRAW-HILL PUB.,PAGE 257} |