University of Illinois Urbana-Champaign

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Showing 1261–1290 of 5,088 items
Thumbnail for Economic effects of controls on nitrogen fertilizer
Economic effects of controls on nitrogen fertilizer
Swanson, Earl Raymond; Taylor, Charles Robert; Van Blokland, P.J.

Thumbnail for Headwaters area assessment
Headwaters area assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis

Thumbnail for Beneficial insects and mites / 1298
Beneficial insects and mites / 1298
Henn, Tess; Weinzierl, Rick

Thumbnail for An interdisciplinary study of environmental pollution by lead and other metals
An interdisciplinary study of environmental pollution by lead and other metals
University of Illinois at Urbana-Champaign. Institute for Environmental Studies

Thumbnail for Year-book for 1907.
Year-book for 1907.
Illinois State Geological Survey

Thumbnail for Waterbird and Wetland Monitoring at The Emiquon Preserve Annual Report 2016
Waterbird and Wetland Monitoring at The Emiquon Preserve Annual Report 2016
Hine, Christopher S.; Hagy, Heath M.; Yetter, Aaron P.; Osborn, Joshua M.