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:: ROGERS, C.L., 1979, GEOLOGIC MAP OF THE CAGUAS QUADRANGLE, PUERTO RICO: U.S. GEOLOGICAL SURVEY MISC. INV. MAP I-1152, SCALE 1:20,000.} |