University of Illinois Urbana-Champaign

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Showing 2671–2700 of 6,092 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 Special to farm advisers / 1950
Special to farm advisers / 1950
Submitter: Howard Ding