@misc{indiciae502b211d3822,
  title = {Geochemical variability of soils and biogeochemical variability of plants in the Piceance Basin, Colorado},
  author = {M. L. Tuttle and R. C. Severson and W.E. Dean and R.W. Klusman},
  year = {1986},
  doi = {10.3133/pp1134e},
  url = {https://pubs.usgs.gov/publication/pp1134E},
  note = {Source identifier: pp1134E}
}