@misc{indiciae6a014da4c398,
  title = {Land use and land cover, 1976, Ekalaka, Montana; North Dakota, South Dakota},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1980},
  doi = {10.3133/l137},
  url = {https://pubs.usgs.gov/publication/l137},
  note = {Source identifier: l137}
}