University of Illinois Urbana-Champaign

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Showing 7051–7080 of 10,173 items
Thumbnail for The Chemistry of Soil Humic Acids
The Chemistry of Soil Humic Acids
Savage, Scott Maxfield

Thumbnail for Upper Des Plaines River area assessment
Upper Des Plaines River area assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis; Illinois Department of Natural Resources. State Geological Survey Division