@misc{indiciae76980cf0fe5e,
  title = {Quality-assurance plan for the Pilot National Water-Quality Assessment Program},
  author = {H. C. Mattraw and William G. Wilber and William M. Alley},
  year = {1989},
  doi = {10.3133/ofr88726},
  url = {https://pubs.usgs.gov/publication/ofr88726},
  note = {Source identifier: ofr88726}
}