@misc{indiciae1f9ada2aae9d,
  title = {Geochemical variation in soils in the Piceance Creek basin, western Colorado},
  author = {Walter E. Dean and Charles D. Ringrose and Ronald William Klusman},
  year = {1979},
  doi = {10.3133/b1479},
  url = {https://pubs.usgs.gov/publication/b1479},
  note = {Source identifier: b1479}
}