@misc{indiciaeaef512d0dcc6,
  title = {Concentrations, distribution, and sources of selenium from irrigated lands in western United States},
  author = {R. A. Engberg and M. A. Sylvester},
  year = {1993},
  doi = {10.1061/(asce)0733-9437(1993)119:3(522)},
  url = {https://pubs.usgs.gov/publication/70243608},
  note = {Source identifier: 70243608}
}