@misc{indiciae9065446e8149,
  title = {Lignite drilling during 1979 in Ward, Mountrail, and Divide counties, western North Dakota},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey and North Dakota Geological Survey},
  year = {1980},
  doi = {10.3133/ofr80867},
  url = {https://pubs.usgs.gov/publication/ofr80867},
  note = {Source identifier: ofr80867}
}