@misc{indiciae84046cac7352,
  title = {Nitrogen sources and cycling in the San Francisco Bay estuary: A nitrate dual isotopic composition approach},
  author = {Scott D. Wankel and C. Kendall and C.A. Francis and A. Paytan},
  year = {2006},
  doi = {10.4319/lo.2006.51.4.1654},
  url = {https://pubs.usgs.gov/publication/70028326},
  note = {Source identifier: 70028326}
}