University of Illinois Urbana-Champaign

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Showing 31–60 of 303 items
Thumbnail for Public groundwater supplies in Edwards county
Public groundwater supplies in Edwards county
Woller, Dorothy M.; Sanderson, Ellis W.

Thumbnail for ISGS Geonews
ISGS Geonews
Illinois State Geological Survey

Thumbnail for Neogene grabens in southernmost Illinois
Neogene grabens in southernmost Illinois
Nelson, W. John; McBride, John H.