University of Illinois Urbana-Champaign

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Showing 3961–3990 of 4,449 items
Thumbnail for Petroleum industry in Illinois, 1971. Part I. Oil and gas developments
Petroleum industry in Illinois, 1971. Part I. Oil and gas developments
Illinois State Geological Survey; Van Den Berg, Jacob; Lawry, Thomas F.

Thumbnail for Illinois farm economics. 1-70
Illinois farm economics. 1-70
University of Illinois at Urbana-Champaign. Extension Service in Agriculture and Home Economics

Thumbnail for Illinois agricultural pest management handbook
Illinois agricultural pest management handbook
University of Illinois at Urbana-Champaign. College of Agriculture, Consumer, and Environmental Services. Cooperative Extension Service