Preliminary geologic map showing iron and copper prospects in the Juncos quadrangle, Puerto Rico

By Broedel, Carl Huntington.
Washington, D.C. United States Geological Survey 1961 .
1 map , Includes text and two tables on sheet. 69 x 66 cm. on sheet 118 x 81 cm..

Geology of the Tanamá and Helecho porphyry copper deposits and vicinity, Puerto Rico

By Cox, Dennis P..
Washington U.S. G.P.O. 1985 .
iv, 59 p. , One map on folded leaf in pocket. 29 cm..

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Preliminary geologic map showing iron and copper prospects in the Juncos quadrangle, Puerto Rico

Geology of the Tanamá and Helecho porphyry copper deposits and vicinity, Puerto Rico