@misc{indiciae62186fc772d1,
  title = {A digital simulation of the glacial-aquifer system in the northern three-fourths of Brown County, South Dakota},
  author = {P.J. Emmons},
  year = {1990},
  doi = {10.3133/wri884198},
  url = {https://pubs.usgs.gov/publication/wri884198},
  note = {Source identifier: wri884198}
}