@misc{indiciaeab6513a0c173,
  title = {Chemical character of minesoils at one Alaskan and twelve western conterminous United States coal-stripmines},
  author = {R. C. Severson and L. P. Gough},
  year = {1981},
  doi = {10.3133/ofr81243},
  url = {https://pubs.usgs.gov/publication/ofr81243},
  note = {Source identifier: ofr81243}
}