@misc{indiciae4e96b0dadf77,
  title = {Guidelines and techniques for obtaining water samples that accurately represent the water chemistry of an aquifer},
  author = {Hans C. Claassen},
  year = {1982},
  doi = {10.3133/ofr821024},
  url = {https://pubs.usgs.gov/publication/ofr821024},
  note = {Source identifier: ofr821024}
}