@misc{indiciaece453f745190,
  title = {Quality-assurance results for routine water analyses in US Geological Survey laboratories, water year 1997},
  author = {Amy S. Ludtke and Mark T. Woodworth and Philip S. Marsh},
  year = {1999},
  doi = {10.3133/wri994057},
  url = {https://pubs.usgs.gov/publication/wri994057},
  note = {Source identifier: wri994057}
}