TY  - BOOK
AU  - Cox,Dennis P.
TI  - Geology of the Tanamá and Helecho porphyry copper deposits and vicinity, Puerto Rico
T2  - U.S. Geological Survey professional paper
AV  - QE462.P6 C69 1985
U1  - 553.4/3/0972953 19
PY  - 1985///
CY  - Washington
PB  - U.S. G.P.O.
KW  - Porphyry
KW  - Puerto Rico
KW  - Tanamá Region
KW  - Local
KW  - Copper ores
N1  - One map on folded leaf in pocket; Bibliography: p. 58-59
ER  -