@misc{indiciae94808f35733e,
  title = {Map showing configuration and thickness, and potentiometric surface and water quality in the Madison Group, Powder River basin, Wyoming and Montana},
  author = {F. A. Swenson and W. R. Miller and W.G. Hodson and F. N. Visher},
  year = {1976},
  doi = {10.3133/i847c},
  url = {https://pubs.usgs.gov/publication/i847C},
  note = {Source identifier: i847C}
}