Classification and selection of Illinois coals
By: [by] Gilbert H. Cady
Series: Illinois State Geological Survey. Bulletin -- no. 62; Bulletin (Illinois State Geological Survey) -- no. 62.
Publisher: State Geological Survey
Published: 1935
Place of publication: Urbana
Language: eng
Number of pages: 354
Subjects: Coal; Coal mines and mining; Analysis
Notes: Includes bibliographical references.