@misc{indiciae7e1dac109f47,
  title = {Humic substances in groundwater},
  author = {E.M. Thurman},
  year = {2006},
  doi = {10.1002/gj.3350210213},
  url = {https://pubs.usgs.gov/publication/70198594},
  note = {Source identifier: 70198594}
}