University of Illinois Urbana-Champaign

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Showing 3211–3240 of 19,124 items
Thumbnail for Headwaters area assessment
Headwaters area assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis

Thumbnail for Drying and preheating coals before coking. Part 2
Drying and preheating coals before coking. Part 2
Jackman, Harold Wesley; Helfinstine, Roy John