@misc{indiciae992363ea6d53,
  title = {Water resources of the Kettle River watershed, east-central Minnesota},
  author = {John O. Helgesen and G. F. Lindholm and W.L. Broussard and D.W. Ericson},
  year = {1973},
  doi = {10.3133/ha437},
  url = {https://pubs.usgs.gov/publication/ha437},
  note = {Source identifier: ha437}
}