@misc{indiciae2456d8490ace,
  title = {Geochemical variability of natural soils and reclaimed mine-spoil soils in the San Juan Basin, New Mexico},
  author = {L. P. Gough and R. C. Severson},
  year = {1981},
  doi = {10.3133/pp1134c},
  url = {https://pubs.usgs.gov/publication/pp1134C},
  note = {Source identifier: pp1134C}
}