University of Illinois Urbana-Champaign

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Showing 7741–7770 of 23,506 items
Thumbnail for Mineralogical and chemical composition of inorganic matter from marketed Illinois coals
Mineralogical and chemical composition of inorganic matter from marketed Illinois coals
Demir, Ilham; Hughes, Randall E.; DeMaris, Philip J.; Ruch, Rodney R.

Thumbnail for Oil and gas development in Illinois during 1951
Oil and gas development in Illinois during 1951
Bell, Alfred Hannam; Kline, Virginia