@misc{indiciae0d57cfec8865,
  title = {Methylation patterns of aquatic humic substances determined by13C NMR spectroscopy},
  author = {Kevin A. Thorn and C. Steelink and Robert L. Wershaw},
  year = {1987},
  doi = {10.1016/0146-6380(87)90016-7},
  url = {https://pubs.usgs.gov/publication/70014273},
  note = {Source identifier: 70014273}
}