@misc{indiciaef2992f96997d,
  title = {Natural and Man-Made Chemicals in North American Soils--Continental-Scale Pilot Study Completed},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {2006},
  doi = {10.3133/fs20063115},
  url = {https://pubs.usgs.gov/publication/fs20063115},
  note = {Source identifier: fs20063115}
}