@misc{indiciae166f8fde92c8,
  title = {Geochemical and mineralogical data for soils of the conterminous United States},
  author = {David B. Smith and William F. Cannon and Laurel G. Woodruff and Federico Solano and James E. Kilburn and David L. Fey},
  year = {2013},
  doi = {10.3133/ds801},
  url = {https://pubs.usgs.gov/publication/ds801},
  note = {Source identifier: ds801}
}