@misc{indiciaeecd9e494cc19,
  title = {Chemical data for water samples collected during four upriver cruises on the Mississippi River between New Orleans, Louisiana, and Minneapolis, Minnesota, May 1990-April 1992},
  year = {1995},
  doi = {10.3133/ofr94523},
  url = {https://pubs.usgs.gov/publication/ofr94523},
  note = {Source identifier: ofr94523}
}