Geology and resource assessment of the Venezuelan Guayana Shield at 1:500,000 scale

Online link http://pubs.usgs.gov/dds/dds46/
Description Mineral resource assessment of the Venezuelan Guayana Shield, including geologic unit map
Originators Schruben, Paul G.; Wynn, Jeffrey C.; Gray, Floyd; Cox, Dennis P.; Stewart, John H.; and Brooks, William E.
Publication U.S. Geological Survey Digital Data Series DDS-46

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