@misc{indiciae3dad772a0177,
  title = {Map showing projected land disturbance by surface mining of coal in Campbell County, Wyoming},
  author = {N.J. Noreen and David W. Moore},
  year = {1978},
  doi = {10.3133/ofr7889},
  url = {https://pubs.usgs.gov/publication/ofr7889},
  note = {Source identifier: ofr7889}
}