@misc{indiciae9771a94883a7,
  title = {Significance of gold and silver in drainage samples from the vicinity of the Baboquivari Peak Wilderness Study Area, Pima County, Arizona},
  author = {G.A. Nowlan},
  year = {1988},
  doi = {10.3133/ofr88426},
  url = {https://pubs.usgs.gov/publication/ofr88426},
  note = {Source identifier: ofr88426}
}