@misc{indiciaef442b3e6701d,
  title = {Coal resource occurrence map of the Lake Nettie Quadrangle, McLean County, North Dakota},
  author = {Woodward-Clyde Consultants},
  year = {1978},
  doi = {10.3133/ofr78994},
  url = {https://pubs.usgs.gov/publication/ofr78994},
  note = {Source identifier: ofr78994}
}