University of Illinois Urbana-Champaign

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Showing 1651–1680 of 13,532 items
Thumbnail for Changing Groundwater Levels in the Cambrian-Ordovician Sandstone Aquifers of Northern Illinois, 1980-2014
Changing Groundwater Levels in the Cambrian-Ordovician Sandstone Aquifers of Northern Illinois, 1980-2014
Hadley, Daniel R.; Abrams, Daniel B.; Mannix, Devin H.; Meyer, Scott C.; Roadcap, George S.

Thumbnail for Summary of stratigraphy shown in geologic cross-section of Illinois Basin.
Summary of stratigraphy shown in geologic cross-section of Illinois Basin.
Workman, Lewis Edwin; Swann, D.H.; Atherton, Elwood

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Back Matter
Submitter: Howard Ding