Searching Books & More : "Geological mapping"

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Stack-unit geologic mapping : color-coded and computer-based methodology

Published: Champaign, Ill. : Dept. of Energy and Natural Resources, Illinois State Geological Survey, [1993]
Format: Print
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Aquifer sensitivity classification for Illinois using depth to uppermost aquifer material and aquifer thickness

Published: Champaign, Ill. : Illinois State Geological Survey, 2001
Format: Print
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