@misc{indiciae13aa420d67dd,
  title = {Occurrence of trihalomethanes in the nation's ground water and drinking-water supply wells, 1985-2002},
  author = {Bryan D. Schaap and John S. Zogorski},
  year = {2006},
  doi = {10.3133/sir20065068},
  url = {https://pubs.usgs.gov/publication/sir20065068},
  note = {Source identifier: sir20065068}
}