@misc{indiciaec07e4db156fe,
  title = {Land use and land cover, 1974-76, Gillette, Wyoming; South Dakota; Montana},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1979},
  doi = {10.3133/l77},
  url = {https://pubs.usgs.gov/publication/l77},
  note = {Source identifier: l77}
}