@misc{indiciae0aaf6151bd80,
  title = {Digital data sets for map products produced as part of the Black Hills Hydrology Study, western South Dakota},
  author = {Joyce E. Williamson and Gregory J. Jarrell and Rick M. Clawges and Joel M. Galloway and Janet M. Carter},
  year = {2000},
  doi = {10.3133/ofr00471},
  url = {https://pubs.usgs.gov/publication/ofr00471},
  note = {Source identifier: ofr00471}
}