University of Illinois Urbana-Champaign

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Showing 1531–1560 of 4,101 items
Thumbnail for Possible recovery of coal from waste at Illinois mines
Possible recovery of coal from waste at Illinois mines
Smith, Cloyde Moffett; Mitchell, David Ray

Thumbnail for Results of tests on sewage treatment
Results of tests on sewage treatment
Babbitt, Harold Eaton; Schlenz, Harry Edward