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1by Church, S. E.“...U.S. Dept. of the Interior, U.S. Geological Survey :...”
Published 1993
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2Published 1994“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
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3by Church, S. E.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 1995
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4Published 1997“...U.S. Dept. of Interior, U.S. Geological Survey,...”
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5Published 2000“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
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6by Church, S. E.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2000
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7Published 2007“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
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