University of Illinois Urbana-Champaign

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Showing 8371–8400 of 14,499 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 The petroleum industry of southeastern Illinois
The petroleum industry of southeastern Illinois
Blatchley, Willis Stanley; Weller, Stuart