@misc{indiciae41026d42373c,
  title = {Mineral resources of the Cloud Peak Primitive Area, Wyoming},
  author = {Thor H. Kiilsgaard and G. E. Ericksen and L. L. Patten and C. L. Bieniewski},
  year = {1972},
  doi = {10.3133/b1371c},
  url = {https://pubs.usgs.gov/publication/b1371C},
  note = {Source identifier: b1371C}
}