@misc{indiciae526d4a234d96,
  title = {Quality of water from surficial-outwash aquifers in the Big Sioux River basin, eastern South Dakota},
  author = {S.J. Lawrence and S. K. Sando},
  year = {1991},
  doi = {10.3133/wri894170},
  url = {https://pubs.usgs.gov/publication/wri894170},
  note = {Source identifier: wri894170}
}