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1Published 1977“...Interior -- Geological Survey,...”
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3by Gebert, W. A.“...Department of the Interior, Geological Survey,...”
Published 1978
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4Published 1976“...U.S. Dept. of the Interior, Geological Survey,...”
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10by Moss, Marshall E.“...U.S. Dept. of the Interior, Geological Survey,...”
Published 1980
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11by Wentz, Dennis A.“...U.S. Dept. of the Interior, Geological Survey,...”
Published 1980
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12Published 1980“...U.S. Dept. of the Interior, Geological Survey,...”
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13by Twenter, F. R.“...U.S. Dept. of the Interior, Geological Survey,...”
Published 1981
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19Published 1980“...U.S. Dept. of the Interior, Geological Survey,...”
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20by Havens, John S.“...U.S. Dept. of the Interior, Geological Survey,...”
Published 1980
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