@misc{indiciae6ad83ac4fa51,
  title = {pH measurement of low-conductivity waters},
  author = {Eurybiades Busenberg and Niel Plummer},
  year = {1987},
  doi = {10.3133/wri874060},
  url = {https://pubs.usgs.gov/publication/wri874060},
  note = {Source identifier: wri874060}
}