@misc{indiciae45b5fd4a5299,
  title = {Lignite drilling during 1977 in western North Dakota: Adams, Billings, Bowman, Dunn, Golden Valley, Grant, Hettinger, Mercer, Oliver, Slope, Stark, and Williams Counties},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1978},
  doi = {10.3133/ofr78888},
  url = {https://pubs.usgs.gov/publication/ofr78888},
  note = {Source identifier: ofr78888}
}