| Reference | {Deposit:: MATERIALS SURVEY, MANGANESE, MATERIALS OFFICE, NATIONAL SECU}{Deposit:: SOURCES BOARD, U.S. DEPT. OF INTERIOR, BUREAU OF MINES, OCT.}{Deposit:: PG. X-21.}{Deposit:: SOREM, R.K., GEOLOGY OF THREE MAJOR MAJOR MANGANESE DISTRICT}{Deposit:: E PHILLIPINES, PP. 661-666,EIGHTH PACIFIC SCIENCE CONGRESS O}{Deposit:: PACIFIC SCIENCE ASS. PROCEEDINGS.1953,QUEZON CITY, U. OF PHI}{Deposit:: PINES 1956, V.2-A.}{Deposit:: CRU3,D.P.,1958;RPT.ZAMBALES BASE METALS MANG.MINE,SIQUIJOR I}{Deposit:: .,MINING NWSLTR,SEPT-OCT,4-38}{Deposit:: PHIL.BUR.MINES,1955,INFO.CIRC.19,MANGANESE} |