@misc{indiciaed251941d84a3,
  title = {Tracing nitrogen sources and cycling in catchments},
  author = {Carol Kendall},
  year = {1998},
  doi = {10.1016/b978-0-444-81546-0.50023-9},
  url = {https://pubs.usgs.gov/publication/70186178},
  note = {Source identifier: 70186178}
}