University of Illinois Urbana-Champaign

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Showing 1771–1800 of 12,351 items
Thumbnail for Classification of the Pennsylvanian rocks of Illinois as of 1956,
Classification of the Pennsylvanian rocks of Illinois as of 1956,
Wanless, Harold R. (Harold Rollin), 1899-1970.; Siever, Raymond

Thumbnail for Preliminary report on organization and method of investigations.
Preliminary report on organization and method of investigations.
Illinois. Coal mining investigations. (Co-operative agreement.)

Thumbnail for Illinois River Levees: Sizing Up Their Impact on Flooding and Risk
Illinois River Levees: Sizing Up Their Impact on Flooding and Risk
Byard, Gregory J.; Meekma, Ryan; McVay, Brad; McConkey, Sally A.