@misc{indiciae40939c3b1c4b,
  title = {Preliminary report of 1977 coal drilling in eastern Montana and northeastern Wyoming: Geophysical logs for Dawson, McCone, Richland, and Rosebud Counties, Montana},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey and Montana Bureau of Mines and Geology},
  year = {1978},
  doi = {10.3133/ofr77721f},
  url = {https://pubs.usgs.gov/publication/ofr77721F},
  note = {Source identifier: ofr77721F}
}