University of Illinois Urbana-Champaign

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Showing 151–180 of 302 items
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 Classification of the Pennsylvanian strata of Illinois
Classification of the Pennsylvanian strata of Illinois
Kosanke, Robert M.; Simon, J.A.; Wanless, H.R.; Willman, H.B.

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 How to read Illinois topographic maps.
How to read Illinois topographic maps.
Steinfeldt, Joel A.; Blanford, Frederick J.; Simpson, Troy J.; Frankie, Wayne T.; Killey, Myrna M.