@misc{indiciae45efe0bd4f66,
  title = {Hydrologic characteristics of the Madison Limestone, the Minnelusa Formation, and equivalent rocks as determined by well-logging formation evaluation, Wyoming, Montana, South Dakota, and North Dakota},
  author = {William J. Head and Richard H. Merkel},
  year = {1977},
  url = {https://pubs.usgs.gov/publication/70156474},
  note = {Source identifier: 70156474}
}