@misc{indiciaef586ad4b7664,
  title = {Adjustment of pesticide concentrations for temporal changes in analytical recovery, 1992\–2010},
  author = {Jeffrey D. Martin and Michael Eberle},
  year = {2011},
  doi = {10.3133/ds630},
  url = {https://pubs.usgs.gov/publication/ds630},
  note = {Source identifier: ds630}
}