University of Illinois Urbana-Champaign

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Showing 6181–6210 of 13,551 items
Thumbnail for Properties of chert related to its reactivity in an alkaline environment
Properties of chert related to its reactivity in an alkaline environment
Fraser, Gordon S.; Harvey, Richard David; Heigold, Paul C.

Thumbnail for Coal resources of District VIII (Danville).
Coal resources of District VIII (Danville).
Kay, Fred Hall; White, Kessack Duke