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1
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2Published 1993“...U.S. Geological Survey bulletin ;...”
Government Document Book -
3Published 1987“...U.S. Geological Survey bulletin ;...”
Government Document Book -
4Published 1987“...U.S. Geological Survey bulletin ;...”
Government Document Book -
5Published 1987“...U.S. Geological Survey bulletin ;...”
Government Document Book -
6Published 1987“...U.S. Geological Survey bulletin ;...”
Government Document Book -
7Published 1987“...U.S. Geological Survey bulletin ;...”
Government Document Book -
8Published 1986“...U.S. Geological Survey bulletin ;...”
Government Document Book -
9Published 1987“...U.S. Geological Survey bulletin ;...”
Government Document Book