University of Illinois Urbana-Champaign

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Showing 1621–1650 of 1,702 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 The biogeochemistry of blue, snow, and Ross' geese
The biogeochemistry of blue, snow, and Ross' geese
Hanson, Harold C.; Jones, Robert L.

Thumbnail for Vermilion River area assessment
Vermilion River area assessment
Illinois Department of Natural Resources

Thumbnail for Petroleum industry in Illinois, 1967
Petroleum industry in Illinois, 1967
Van Den Berg, Jacob; Lawry, T.F.; Mast, Richard F.