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1Published 2003“...U.S. Geological Survey ;...”
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2by Weary, David J.“...U.S. Geological Survey,...”
Published 2006
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3Published 2003“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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4by Weary, David J.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 2006
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5Published 2004“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Map