University of Illinois Urbana-Champaign

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Showing 1921–1950 of 17,990 items
Thumbnail for The 7-day 10-year low flows of Illinois streams
The 7-day 10-year low flows of Illinois streams
Singh, Krishan P.; Stall, John Byron

Thumbnail for Illinois mineral industry in 1944
Illinois mineral industry in 1944
Voskuil, Walter Henry; Stevens, Douglas F.

Thumbnail for Identification of Existing Surface Water Quality Monitoring Programs, Upper Illinois River Basin
Identification of Existing Surface Water Quality Monitoring Programs, Upper Illinois River Basin
Sinclair, Robert A.; Greene, Amelia V.; Weller, Bonnie; Himick, Lisa