University of Illinois Urbana-Champaign

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Showing 5221–5250 of 6,240 items
Thumbnail for The measurement of air quantities and energy losses in mine entries
The measurement of air quantities and energy losses in mine entries
Smith, Cloyde Moffett; Callen, Alfred Copeland

Thumbnail for Petroleum industry in Illinois, 1972. Part I. Oil and gas developments
Petroleum industry in Illinois, 1972. Part I. Oil and gas developments
Illinois State Geological Survey; Van Den Berg, Jacob; Lawry, Thomas F.