@misc{indiciaedf39a90d3b13,
  title = {Stratigraphy of the Mississippian System, south-central Colorado and north-central New Mexico},
  author = {Augustus K. Armstrong and Bernard L. Mamet and John E. Repetski},
  year = {1992},
  doi = {10.3133/b1787ee},
  url = {https://pubs.usgs.gov/publication/b1787EE},
  note = {Source identifier: b1787EE}
}