@misc{indiciae6b6978f82c9d,
  title = {Land and federal mineral ownership coverage for northwestern Colorado},
  author = {L. H. Biewick and T.J. Mercier and Pam Levitt and Doug Deikman and Bob Vlahos},
  year = {1999},
  doi = {10.3133/ofr99553a},
  url = {https://pubs.usgs.gov/publication/ofr99553A},
  note = {Source identifier: ofr99553A}
}