Illinois coals
Subtitle: constitution important with reference to their utilization
By: by L.C. McCabe
Series: Circular / Illinois State Geological Survey -- no. 26; Circular (Illinois State Geological Survey) -- no. 26.
Publisher: State Geological Survey
Published: 1938
Place of publication: Urbana, Ill
Language: eng
Subjects: Coal; Composition
Notes: Cover title.

Reprinted from Mechanical engineering, March, 1938 (p. 217-221).