@misc{indiciaeb770ebb92ade,
  title = {Temporal and vertical distribution of total ammonia nitrogen and un-ionized ammonia nitrogen in sediment pore water from the upper Mississippi River},
  author = {Bradley E. Frazier and Teresa J. Naimo and Mark B. Sandheinrich},
  year = {1996},
  doi = {10.1002/etc.5620150204},
  url = {https://pubs.usgs.gov/publication/1002893},
  note = {Source identifier: 1002893}
}