@misc{indiciaec498f66ee265,
  title = {Results of the US Geological Survey's second International Interlaboratory Analytical Comparison Study; Standard Reference Water Samples M-86 (major constituents), T-87 (trace constituents), and P-5 (precipitation snowmelt)},
  author = {V.J. Janzer},
  year = {1985},
  doi = {10.3133/wri854049},
  url = {https://pubs.usgs.gov/publication/wri854049},
  note = {Source identifier: wri854049}
}