C1020 National Geologic Mapping Program; goals, objectives and long-range plans. 1987, 1987, United States Geological Survey, Geological Survey Circular, C1020

by United States Geological Survey

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Book description: United States Geological Survey, 1987. Paperback. See Description. United States Geological Survey, 1987, Geological Survey Circular, C1020. Soft printed covers, stamp on front, good plus or better condition. Exploration Geology science nature environment mining geophysics geochemistry exploration mineral minerals research gold earth science environmental engineering geosciences gems petroleum history paleontology fossils ecology mineralogy petrology United St

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