University of Illinois Urbana-Champaign

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Showing 301–330 of 767 items
Thumbnail for Functional Groups of Soil Humic Acids
Functional Groups of Soil Humic Acids
Butler, John Herbert Anthony

Thumbnail for Annual register. 1928-29
Annual register. 1928-29
University of Illinois at Urbana-Champaign

Thumbnail for Annual register. 1929-30
Annual register. 1929-30
University of Illinois at Urbana-Champaign

Thumbnail for Illinois agricultural pesticides conference: Proceedings
Illinois agricultural pesticides conference: Proceedings
University of Illinois at Urbana-Champaign. College of Agricultural, Consumer, and Environmental Sciences. Cooperative Extension Service