Specific gravity studies of Illinois coal
By: by Merle L. Nebel.
Series: University of Illinois. Engineering Experiment Station. Bulletin -- no. 89; University of Illinois bulletin -- v. 13, no. 44; Bulletin (University of Illinois (Urbana-Champaign campus). Engineering Experiment Station) -- no. 89
Publisher: The University of Illinois
Published: 1916
Place of publication: Urbana, Ill
Language: eng
Number of pages: 49
Subjects: Coal -- Illinois.