Percentage of extractions of bituminous coal with special reference to Illinois conditions
By: by C. M. Young.
Series: University of Illinois Engineering Experiment Station. Bulletin -- no. 100; University of Illinois bulletin -- v. 14, no. 42; Bulletin (University of Illinois (Urbana-Champaign campus). Engineering Experiment Station) -- no. 10; University of Illinois bulletin -- v. 14, no. ; Illinois coal mining investigatio
Publisher: The University of Illinois
Published: 1917
Place of publication: Urbana, Ill
Subjects: Coal mines and minin; Coal mines and mining -- Illinoi