@misc{indiciaea8cf5e4c78cb,
  title = {Coal resource occurrence map of the Garrison Dam North quadrangle, Mercer and McLean counties, North Dakota},
  author = {Woodward-Clyde Consultants},
  year = {1978},
  doi = {10.3133/ofr78992},
  url = {https://pubs.usgs.gov/publication/ofr78992},
  note = {Source identifier: ofr78992}
}