University of Illinois Urbana-Champaign

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Showing 2431–2460 of 35,815 items
Thumbnail for Optimal time for collecting volatile organic chemical samples from slowly recovering wells
Optimal time for collecting volatile organic chemical samples from slowly recovering wells
Chou, Sheng-Fu J.; Herzog, Beverly L.; Valkenburg, John R.; Griffin, Robert A.

Thumbnail for Catalog of Devonian and deeper tests in southern Illinois
Catalog of Devonian and deeper tests in southern Illinois
Stevenson, D.L.; Keys, John N.; Cluff, Robert M.

Thumbnail for Sand and gravel resources of Boone County, Illinois
Sand and gravel resources of Boone County, Illinois
Hunter, Ralph E.; Kempton, John P.