Preliminary report of 1977 coal drilling in eastern Montana and northeastern Wyoming: Geophysical logs for Dawson, McCone, Richland, and Rosebud Counties, Montana
Open-File Report 77-721-F
By:
U.S. Geological Survey and Montana Bureau of Mines and Geology
Preliminary report of 1977 coal drilling in eastern Montana and northeastern Wyoming: Geophysical logs for Dawson, McCone, Richland, and Rosebud Counties, Montana