@misc{indiciaedfdd912e2b04,
  title = {Ground-water-flow systems in the Powder River structural basin, Wyoming and Montana},
  author = {J.G. Rankl and M.E. Lowry},
  year = {1990},
  doi = {10.3133/wri854229},
  url = {https://pubs.usgs.gov/publication/wri854229},
  note = {Source identifier: wri854229}
}