@misc{indiciaed4dd80635264,
  title = {Some aspects of U.S. Geological Survey activities related to the effects of contaminants on water resources},
  author = {B.K. Gilbert and William B. Mann and P. A. Emery},
  year = {1987},
  doi = {10.3133/ofr87574},
  url = {https://pubs.usgs.gov/publication/ofr87574},
  note = {Source identifier: ofr87574}
}