@misc{indiciae6b1be8883188,
  title = {Sources and age of aquatic humus},
  author = {Diane M. McKnight and George R. Aiken},
  year = {1998},
  doi = {10.1007/978-3-662-03736-2\_2},
  url = {https://pubs.usgs.gov/publication/70198952},
  note = {Source identifier: 70198952}
}