@misc{indiciaee416017ee06d,
  title = {Historical profile, Quality of Water Laboratories, U. S. Geological Survey},
  author = {W. H. Durum},
  year = {1978},
  doi = {10.3133/ofr78432},
  url = {https://pubs.usgs.gov/publication/ofr78432},
  note = {Source identifier: ofr78432}
}