University of Illinois Urbana-Champaign

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Showing 7201–7230 of 14,290 items
Thumbnail for Occurence of Nitrate in Well Waters
Occurence of Nitrate in Well Waters
Larson, T.E.; Henley, Laurel

Thumbnail for The classic Silurian reefs of the Chicago area
The classic Silurian reefs of the Chicago area
Mikulic, Donald G.; Kluessendorf, Joanne

Thumbnail for Availability of the Herrin coal for mining in Illinois
Availability of the Herrin coal for mining in Illinois
Treworgy, Colin G.; Korose, Christopher P.; Wiscombe, Christine L.