University of Illinois Urbana-Champaign

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Showing 1501–1530 of 1,739 items
Thumbnail for Petroleum industry in Illinois, 1977. Part 1. Oil and gas developments
Petroleum industry in Illinois, 1977. Part 1. Oil and gas developments
Illinois State Geological Survey; Van Den Berg, Jacob; Lawry, Thomas F.

Thumbnail for Petroleum industry in Illinois, 1970. Part I. Oil and Gas Developments
Petroleum industry in Illinois, 1970. Part I. Oil and Gas Developments
Illinois State Geological Survey; Van Den Berg, Jacob; Lawry, Thomas F.

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