The classification of coal
By: by Samuel W. Parr
Series: University of Illinois. Engineering Experiment Station. Bulletin -- no. 180; University of Illinois bulletin -- vol. XXV, no. 48; Bulletin (University of Illinois at Urbana-Champaign. Engineering Experiment Station) -- no. 180; University of Illinois bulletin -- v. 25, no. 48
Publisher: University of Illinois
Published: 1928
Place of publication: Urbana
Language: eng
Number of pages: 62
Subjects: Coal
Notes: Bibliography: p. 51-59.