University of Illinois Urbana-Champaign

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Showing 4981–5010 of 28,333 items
Thumbnail for Availability of the Springfield Coal for mining in Illinois : map summary of Illinois minerals 118
Availability of the Springfield Coal for mining in Illinois : map summary of Illinois minerals 118
Treworgy, Colin G.; Korose, Christopher P.; Chenoweth, Cheri A.; North, Daniel L.

Thumbnail for Possibilities of the solar engine
Possibilities of the solar engine
McKinnie, Earle Clarence

Thumbnail for The gray option
The gray option
Roback, Jason W.