@misc{indiciaed4442b9947c8,
  title = {Total and extractable selenium in soils from the Lake Andes-Wagner irrigation area, South Dakota},
  author = {S. A. Wilson and R. C. Severson and K. R. Kennedy and A.R. Shinneman and S.A. Kinney},
  year = {1990},
  doi = {10.3133/ofr9052},
  url = {https://pubs.usgs.gov/publication/ofr9052},
  note = {Source identifier: ofr9052}
}