University of Illinois Urbana-Champaign

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Showing 31–60 of 608 items
Thumbnail for Chemical characteristics of banded ingredients of coal
Chemical characteristics of banded ingredients of coal
Rees, Orin Wainwright; Wagner, William Frederick; Tilbury, Wilbur Glenn, joint author

Thumbnail for A unique clay from the Goose Lake, Illinois, area
A unique clay from the Goose Lake, Illinois, area
Grim, Ralph E.; Bradley, William Frank