Published by United States Geological Survey., 1973
Seller: Eryops Books, Stephenville, TX, U.S.A.
Map
No Binding. Condition: Very Good. Large folded sheet and a 6-page explanation of geology/economic geology in printed envelope; includes a geologic map superposed on topographic contours, a columnar section with description of units, and a large table summarizing the mineral deposits; ex-corporate library; in very good condition. Map.
Published by U. S. G. S. in Cooperation With Common Weath Puerto Rico, 1970
Map
Map. Condition: Very Good. Map I-721.