@misc{indiciae2ce71844d7e3,
  title = {Quality assessment program and results for the NAWQA surface water pilot studies},
  author = {R. F. Sanzolone and J. L. Ryder},
  year = {1989},
  doi = {10.3133/ofr89658},
  url = {https://pubs.usgs.gov/publication/ofr89658},
  note = {Source identifier: ofr89658}
}