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3.
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4.
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6.
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7.
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Champaign, Ill. : Illinois State Geological Survey, 1990.
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8.
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Champaign, Ill. (615 E. Peabody Dr., Champaign 61820) : Illinois State Geological Survey : Hazardous Waste Research and Information Center, 1990.
QE105 .A32 no. 134 TD224.I3 |
Map It |
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9.
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Champaign : Illinois State Geological Survey, 1984.
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10.
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