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1by Berndt, Marian P.“...U.S. Department of the Interior, U.S. Geological Survey,...”
Published 1998
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2“...U.S. Department of the Interior, U.S. Geological Survey,...”
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3by Frick, Elizabeth A.“...U.S. Department of the Interior, U.S. Geological Survey,...”
Published 1998
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4by Kingsbury, James A.“...U.S. Department of the Interior, U.S. Geological Survey,...”
Published 2020
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5“...U.S. Department of the Interior, U.S. Geological Survey,...”
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6by Haag, Kim H.“...U.S. Department of the Interior, U.S. Geological Survey,...”
Published 1996
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