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1Published 1983“...U.S. Geological Survey ;...”
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2by Tortorelli, Robert L.“...U.S. Geological Survey,...”
Published 1996
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3by Tortorelli, Robert L.“...U.S. Dept of the Interior, U.S. Geological Survey ;...”
Published 1996
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4by Wahl, Kenneth L.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1997
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5Published 2002“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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6by Esralew, Rachel A.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2011
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7by Shivers, Molly J.“...U.S. Department of Interior, U.S. Geological Survey,...”
Published 2015
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8“...U.S. Department of the Interior, U.S. Geological Survey,...”
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9by Brigham, Mark E.“...U.S. Deptartment of the Interior, U.S. Geological Survey,...”
Published 2002
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