@misc{indiciae8ade08b9c9cc,
  title = {Strong-acid, carboxyl-group structures in fulvic acid from the Suwannee River, Georgia. 2. Major structures},
  author = {J.A. Leenheer and R.L. Wershaw and M.M. Reddy},
  year = {2002},
  doi = {10.1021/es00002a016},
  url = {https://pubs.usgs.gov/publication/70018880},
  note = {Source identifier: 70018880}
}