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1Published 1998“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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2“...U.S. Department of the Interior, U.S. Geological Survey,...”
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3“...U.S. Department of the Interior, U.S. Geological Survey,...”
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4by Smith, J. Dungan (James Dungan), 1939-“...U.S. Department of the Interior, U.S. Geological Survey,...”
Published 1998
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5by Griffin, Eleanor R.“...[U.S. Dept. of the Interior, U.S. Geological Survey] ; [Chief, Branch of Regional Research],...”
Published 2001
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