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1by Miller, Robert T.“...U.S. Geological Survey ;...”
Published 1994
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2by Delin, G. N.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1991
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3by Delin, G. N.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1991
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4by Delin, G. N.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1991
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5by Delin, G. N.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1993
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6Published 1995“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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7Published 1994“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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8Published 1995“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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9by Strobel, Michael L.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1996
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10by Strobel, Michael L.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1998
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11by Delin, G. N.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2007
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12Published 1994“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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13by Delin, G. N.“...Dept. of the Interior, U.S. Geological Survey ;...”
Published 1984
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14by Delin, G. N.“...U.S. Dept. of the Interior, Geological Survey ;...”
Published 1987
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15by Delin, G. N.“...U.S. Dept. of the Interior, Geological Survey ;...”
Published 1987
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16by Delin, G. N.“...Dept. of the Interior, U.S. Geological Survey ;...”
Published 1990
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17by Delin, G. N.“...U.S. Dept. of the Interior, Geological Survey :...”
Published 1986
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18Published 1992“...U.S. Geological Survey, Dept. of the Interior ;...”
Government Document Microform Book