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1by Nichols, Thomas C.“...U.S. Geological Survey bulletin ;...”
Published 1986
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2by Baskerville, Charles A.“...U.S. Geological Survey bulletin ;...”
Published 1988
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4by Baskerville, Charles A.“...U.S. Geological Survey bulletin ;...”
Published 1993
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5Published 1995“...U.S. Geological Survey bulletin ;...”
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6by Lee, Fitzhugh T.“...U.S. Geological Survey bulletin ;...”
Published 1994
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7by Lee, Fitzhugh T.“...U.S. Geological Survey bulletin ;...”
Published 1994
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8
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9
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10
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11by Foley, N. K.“...U.S. Geological Survey bulletin ;...”
Published 1995
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12by Nichols, Thomas C.“...U.S. Geological Survey bulletin ;...”
Published 1986
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13by Dale, T. Nelson (Thomas Nelson), 1845-1937“...U.S. Geological Survey. Bulletin ;...”
Published 1905
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