@misc{indiciaea2e6aaa3503a,
  title = {Chemical quality of surface water in the Umpqua River Basin, Oregon},
  author = {D. A. Curtiss},
  year = {1969},
  doi = {10.3133/ofr6967},
  url = {https://pubs.usgs.gov/publication/ofr6967},
  note = {Source identifier: ofr6967}
}