@misc{indiciae7e105ffcc1f9,
  title = {Geochemical and geostatistical evaluation of American Flats-Silverton planning units, San Juan volcanic province, Colorado},
  author = {Erick F. Weiland and J. W. Lindemann and R. A. Connors and W. T. Meyers and S. A. Johnson and W. D. Heran},
  year = {1981},
  doi = {10.3133/ofr81599},
  url = {https://pubs.usgs.gov/publication/ofr81599},
  note = {Source identifier: ofr81599}
}