Reference | {Deposit:: COX, DENNIS P., AND BRIGGS, REGINALD P., 1973, METALLOGENIC MAP OF PUERTO RICO: U.S. GEOLOGICAL SURVEY, MISCELLANEOUS GEOLOGIC INVESTIGATIONS MAP I-721, ACCOMPANIED BY EXPLANATORY PAMPHLET, 6 P.}{Deposit:: NEIVENS, D.M.,1959, GEOLOGICAL SURVEY OF TIBES AREA,PUERTO RICO: MAP IN THE FILES OF THE DEPARTMENT OF NATURAL RESOURCES, PUERTO RICO.} |