@misc{indiciaebbd422fa15e3,
  title = {Cortez SW quadrangle, Montezuma County, Colorado},
  author = {E. B. Ekren and F. N. Houser},
  year = {1959},
  doi = {10.3133/mf217},
  url = {https://pubs.usgs.gov/publication/mf217},
  note = {Source identifier: mf217}
}