@misc{indiciae6ced687f9929,
  title = {Geohydrology of the Madison and associated aquifers in parts of Montana, North Dakota, South Dakota, and Wyoming},
  author = {Joe S. Downey},
  year = {1982},
  doi = {10.3133/ofr82914},
  url = {https://pubs.usgs.gov/publication/ofr82914},
  note = {Source identifier: ofr82914}
}