@misc{indiciaec15c884a7d65,
  title = {Report of the U.S. Geological Survey's analytical evaluation program; standard reference water samples M-82 (major constituents), T-83 (trace constituents), N-8 (nutrients), and P-2 (precipitation snowmelt)},
  author = {V.J. Janzer},
  year = {1983},
  doi = {10.3133/ofr83864},
  url = {https://pubs.usgs.gov/publication/ofr83864},
  note = {Source identifier: ofr83864}
}