@misc{indiciaeff9a372ef651,
  title = {Water resources data for South Dakota, water year 1971; Part 2, Water quality records},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1972},
  doi = {10.3133/wdrsd712},
  url = {https://pubs.usgs.gov/publication/wdrSD712},
  note = {Source identifier: wdrSD712}
}