@misc{indiciae67d2ef176dab,
  title = {Summary of data for quality assessment materials analyzed from January 1994 through November 1998 using the NAWQA Program bed-sediment analytical protocol},
  author = {R. F. Sanzolone},
  year = {1999},
  doi = {10.3133/ofr99588},
  url = {https://pubs.usgs.gov/publication/ofr99588},
  note = {Source identifier: ofr99588}
}