Contributions to the study of coal
Subtitle: Banded ingredients of no. 6 coal and their heating values as related to washability characteristics and preliminary report on unit coal-specific gravity curves of Illinois coals
By: by L.C. McCabe, D.R. Mitchell and G.H. Cady
Contributors: Mitchell, David Ray, 1898- joint author; Cady, Gilbert H. (Gilbert Haven), b. 1882
Series: Illinois State Geological Survey Report of investigations -- no. 34
Published: 1934
Place of publication: Urbana, Illinois
Language: eng
Number of pages: 61
Subjects: Coal; Coal and mining
Notes: At head of title: Illinois. Department of Registration and Education. Division of the Geological Survey.

Includes bibliographical references.