University of Illinois Urbana-Champaign

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Showing 6601–6630 of 21,905 items
Thumbnail for Oil and gas development in Illinois in 1939
Oil and gas development in Illinois in 1939
Bell, Alfred Hannam; Cohee, George Vincent

Thumbnail for Classifying Illinois Impoundments: an Examination of Techniques for Assessing Lake Bottom Conditions
Classifying Illinois Impoundments: an Examination of Techniques for Assessing Lake Bottom Conditions
Roseboom, Donald P.; Evans, Ralph L.; Wang, W.; Butts, Thomas A.; Twait, Richard M.