@misc{indiciaea9ea46cabb6f,
  title = {Comparison of humic substances isolated from peatbog water by sorption on DEAE-cellulose and amberlite XAD-2},
  author = {J. Hejzlar and B. Szpakowska and R.L. Wershaw},
  year = {1994},
  doi = {10.1016/0043-1354(94)90171-6},
  url = {https://pubs.usgs.gov/publication/70017517},
  note = {Source identifier: 70017517}
}