@misc{indiciae11ae470402a3,
  title = {Technical review of water-quality laboratories providing analytical services for the Water Resources Division of the U.S. Geological Survey},
  author = {David E. Erdmann},
  year = {1991},
  doi = {10.3133/ofr91223},
  url = {https://pubs.usgs.gov/publication/ofr91223},
  note = {Source identifier: ofr91223}
}