@misc{indiciae7c810515a876,
  title = {Plan for hydrologic study of an area to be surface mined for coal in northwestern Colorado},
  author = {Robert S. Williams and Nancy E. Driver},
  year = {1982},
  doi = {10.3133/ofr82874},
  url = {https://pubs.usgs.gov/publication/ofr82874},
  note = {Source identifier: ofr82874}
}