TY  - BOOK
T1  - Geology of the Tanamá and Helecho porphyry copper deposits and vicinity, Puerto Rico /
DA  - 1985.
CY  - Washington :
AU  - Cox, Dennis P.
VL  - 1327
CN  - QE75
CN  - QE462.P6
CN  - QE75
PB  - U.S. G.P.O.,
PP  - Washington :
PY  - 1985.
N1  - One map on folded leaf in pocket.
ID  - 226743
KW  - Porphyry
KW  - Copper ores
TI  - Geology of the Tanamá and Helecho porphyry copper deposits and vicinity, Puerto Rico /
ER  -