University of Illinois Urbana-Champaign

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Showing 1201–1230 of 3,313 items
Thumbnail for Effect of Flaggers and Spotters in Directing Work Zone Traffic for Illinois Expressways and Freeways
Effect of Flaggers and Spotters in Directing Work Zone Traffic for Illinois Expressways and Freeways
El-Rayes, Khaled; Liu, Liang; El-Gohary, Nora; Abdelmohsen, Ahmed Zafer

Thumbnail for NRES news. 1997-2001
NRES news. 1997-2001
University of Illinois at Urbana-Champaign. Department of Natural Resources and Environmental Sciences