@misc{indiciae938e5a6cb8a1,
  title = {General introduction for the “National Field Manual for the Collection of Water-Quality Data”},
  author = {U.S. Geological Survey},
  year = {2018},
  doi = {10.3133/tm9a0},
  url = {https://pubs.usgs.gov/publication/tm9A0},
  note = {Source identifier: tm9A0}
}