Coal resources of Michigan
By: by George V. Cohee[and others]
Series: Geological Survey circular -- 77; Geological Survey circular -- 77.
Publisher: United States Department of the Interior Geological Survey
Published: 1950
Place of publication: Washington
Language: eng
Number of pages: 56
Subjects: Coal
Notes: Cover title.

"Prepared in cooperation with the Michigan Geological Survey Division, Dept. of Conservation, and the Department of Geology, University of Michigan."