@misc{indiciae1c24e1ec11ad,
  title = {Alkaline rock complexes in the Wet Mountains area, Custer and Fremont counties, Colorado},
  author = {Theodore J. Armbrustmacher},
  year = {1984},
  doi = {10.3133/pp1269},
  url = {https://pubs.usgs.gov/publication/pp1269},
  note = {Source identifier: pp1269}
}