University of Illinois Urbana-Champaign

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Showing 3721–3750 of 37,114 items
Thumbnail for Headwaters area assessment
Headwaters area assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis

Thumbnail for Functional Groups of Soil Humic Acids
Functional Groups of Soil Humic Acids
Butler, John Herbert Anthony

Thumbnail for Potassium Fixation by Clays
Potassium Fixation by Clays
Islam, Mohammed Azizul