University of Illinois Urbana-Champaign

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Showing 31–60 of 157 items
Thumbnail for ISGS Geonews
ISGS Geonews
Illinois State Geological Survey

Thumbnail for Heat drying coals at moderate temperatures before coking
Heat drying coals at moderate temperatures before coking
Jackman, Harold Wesley; Helfinstine, Roy John

Thumbnail for ILLIMAP-a computer-based mapping system for Illinois
ILLIMAP-a computer-based mapping system for Illinois
Swann, D.H.; DuMontelle, P.B.; Mast, R.F.; Van Dyke, L.H.

Thumbnail for Sand and gravel resources of Mason County, Illinois
Sand and gravel resources of Mason County, Illinois
Labotka, Theodore C.; Hester, Norman C.

Thumbnail for ISGS Geonews
ISGS Geonews
Illinois State Geological Survey