University of Illinois Urbana-Champaign

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Showing 9971–10000 of 19,985 items
Thumbnail for Visual estimates of grain size distribution in some Chester sandstones
Visual estimates of grain size distribution in some Chester sandstones
Swann, David Henry; Fisher, Robert W.; Walters, Mathias J.

Thumbnail for History of Illinois mineral industries
History of Illinois mineral industries
Risser, Hubert E.; Major, Robert L.