@misc{indiciaec854bd8c42f1,
  title = {Preparative isolation of aquatic humic substances},
  author = {E.M. Thurman and Ronald L. Malcolm},
  year = {2002},
  doi = {10.1021/es00086a012},
  url = {https://pubs.usgs.gov/publication/70011717},
  note = {Source identifier: 70011717}
}