@misc{indiciaeb99ff5611aaf,
  title = {Trace elements and major-element oxides in the Phosphoria Formation at Enoch Valley, Idaho; Permian sources and current reactivities},
  author = {D.Z. Piper},
  year = {1999},
  doi = {10.3133/ofr99163},
  url = {https://pubs.usgs.gov/publication/ofr99163},
  note = {Source identifier: ofr99163}
}