@misc{indiciaeefe4fb8751e1,
  title = {Mineral resources of study areas contiguous to the Uncompahgre Primitive Area, San Juan Mountains, southwestern Colorado},
  author = {Thomas August Steven and P. W. Lipman and F. S. Fisher and C. L. Bieniewski and H. C. Meeves and Peter Popenoe and Robert G. Luedke},
  year = {1973},
  doi = {10.3133/ofr73271},
  url = {https://pubs.usgs.gov/publication/ofr73271},
  note = {Source identifier: ofr73271}
}