@misc{indiciaedb0d0a0eb6e4,
  title = {Quality assurance requirements for water-quality laboratories providing analytical survices for the Water Resources Division of the U.S. Geological Survey},
  author = {David E. Erdmann},
  year = {1991},
  doi = {10.3133/ofr91222},
  url = {https://pubs.usgs.gov/publication/ofr91222},
  note = {Source identifier: ofr91222}
}