University of Illinois Urbana-Champaign

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Showing 9811–9840 of 14,443 items
Thumbnail for Geochemistry of Fluorine in Illinois Soils
Geochemistry of Fluorine in Illinois Soils
Omueti, John Ajayi Izegaegbe

Thumbnail for Oil investigations in Illinois in 1916, under direction of Fred H. Kay.
Oil investigations in Illinois in 1916, under direction of Fred H. Kay.
Illinois State Geological Survey; Kay, Fred Hall; Brokaw, Albert Dudley; St. Clair, Stuart; Butts, Charles