@misc{indiciaeb1f9c6438975,
  title = {The isotopic composition of ore lead of the Creede mining district and vicinity, San Juan Mountains, Colorado: Text of a talk presented at the San Juan Mountains symposium to honor Thomas A. Steven; Rocky Mountain Section meeting of the Geological Society of America, May 2, 1987, Boulder, Colorado},
  author = {N.K. Foley and P.B. Barton and P. M. Bethke and B. R. Doe},
  year = {1988},
  doi = {10.3133/ofr88510},
  url = {https://pubs.usgs.gov/publication/ofr88510},
  note = {Source identifier: ofr88510}
}