@misc{indiciae4b180dea9cf6,
  title = {Tables for reducing bicarbonate to compute sum of determined constituents and for calculating hardness of a natural ground water},
  author = {L.C. Dutcher and W. R. Moyle},
  year = {1960},
  doi = {10.3133/ofr6042},
  url = {https://pubs.usgs.gov/publication/ofr6042},
  note = {Source identifier: ofr6042}
}