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1.
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Open-File Report 2009-1295
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2.
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Usgs Open-File Report 92-302
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3.
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Usgs Open-File Report 89-471
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4.
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Usgs Open-File Report 89-471
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5.
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Open-File Report
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6.
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Open-File Report
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7.
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Usgs Open-File Report 92-302
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8.
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Open-File Report 2009-1295
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9.
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Usgs Open-File Report 81-1046
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10.
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Usgs Open-File Report 81-1046
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