The weathering of coal.
Subtitle: Series of 1909
By: by S. W. Parr and W. F. Wheeler.
Contributors: Wheeler, Wilfrid Forrest,
Series: Bulletin no. 38 ... University of Illinois. Engineering experiment station; University of Illinois bulletin -- v. 6, no. 44; Bulletin (University of Illinois (Urbana-Champaign campus). Engineering Experiment Station) -- no. 38.
Publisher: The University
Published: 1909
Place of publication: Urbana, Ill
Language: eng
Number of pages: 43
Subjects: Coal-weathering.