@misc{indiciae837474fe955e,
  title = {Water-resources activities of the U.S. Geological Survey in South Dakota; fiscal years 1989-90},
  author = {E. M. Decker},
  year = {1991},
  doi = {10.3133/ofr9191},
  url = {https://pubs.usgs.gov/publication/ofr9191},
  note = {Source identifier: ofr9191}
}