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4by Briggs, John C. (John Charles), 1946-“...U.S. Geological Survey,...”
Published 1977
Government Document Book -
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7Published 1979“...U.S. Geological Survey,...”
Government Document Conference Proceeding Book -
8Published 1982“...U.S. Geological Survey,...”
Government Document Book -
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18by Langbein, Walter B. (Walter Basil), 1907-1982“...U.S. Geological Survey,...”
Published 1982
Government Document Book -
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20by Moore, John E. (John Ezra), 1931-“...U.S. Geological Survey,...”
Published 1980
Government Document Book