University of Illinois Urbana-Champaign

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Showing 3751–3780 of 6,288 items
Thumbnail for The geology of zinc in coals of the Illinois Basin
The geology of zinc in coals of the Illinois Basin
Cobb, J.C.; Steele, J.D.; Treworgy, C.G.; Ashby, Jim F.; Russell, S.J.

Thumbnail for Essays in Empirical Labor Economics
Essays in Empirical Labor Economics
Billger, Sherrilyn Marie

Thumbnail for Mineral industries of Illinois
Mineral industries of Illinois
Christensen, H.P.; Erb, E.

Thumbnail for Composition and character of Illinois coals,
Composition and character of Illinois coals,
Parr, Samuel Wilson; Bement, Alburto; Breckenridge, Lester Paige