@misc{indiciaebb1ed9021d85,
  title = {Formation and loss of humic substances during decomposition in a pine forest floor},
  author = {R.G. Qualls and A. Takiyama and R.L. Wershaw},
  year = {2003},
  doi = {10.2136/sssaj2003.0899},
  url = {https://pubs.usgs.gov/publication/70025678},
  note = {Source identifier: 70025678}
}