@misc{indiciae2e333915fb58,
  title = {Geologic framework of the ground-water system in Jurassic and Cretaceous rocks in the Northern Great Plains, in parts of Montana, North Dakota, South Dakota, and Wyoming},
  author = {Lawrence O. Anna},
  year = {1986},
  doi = {10.3133/pp1402b},
  url = {https://pubs.usgs.gov/publication/pp1402B},
  note = {Source identifier: pp1402B}
}