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Joint Photographic Experts Group Image  |  2001-01-01  |  9.2 MB  |  6000x4000
   ocr: Assessment Mineral for the Occurrences Geochemistry, Geology, and Commonwealth Geophysics, Mineral of Puerto Resource Rico U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 98-38 %680 2001 EUSGS science forac changing world