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1Published 2016“...U.S. Department of the Interior, U.S. Geological Survey,...”
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2by Omang, R. J.“...U.S. Department of the Interior, U.S. Geological Survey,...”
Published 1996
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3by Colton, Roger B. (Roger Burnham), 1924-“...U.S. Dept. of the Interior, Geological Survey,...”
Published 1964
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