@misc{indiciaec2cdeb9dbf27,
  title = {Mineral resources of study areas contiguous to the Uncompahgre Primitive Area, San Juan Mountains, southwestern Colorado, with a section on interpretation of aeromagnetic data},
  author = {Thomas August Steven and P. W. Lipman and F. S. Fisher and C. L. Bieniewski and H. C. Meeves and Peter Popenoe and R. G. Luedke},
  year = {1977},
  doi = {10.3133/b1391e},
  url = {https://pubs.usgs.gov/publication/b1391E},
  note = {Source identifier: b1391E}
}