@misc{indiciae63d1b762f7ad,
  title = {The use of standard reference water samples by the U.S. Geological Survey},
  author = {L.J. Schroder and M. J. Fishman and L.C. Friedman and G.W. Darlington},
  year = {1980},
  doi = {10.3133/ofr80738},
  url = {https://pubs.usgs.gov/publication/ofr80738},
  note = {Source identifier: ofr80738}
}