@misc{indiciae1c0e1be1539e,
  title = {Stratigraphy and sedimentary facies of the Madison Limestone and associated rocks in parts of Montana, Nebraska, North Dakota, South Dakota, and Wyoming},
  author = {J.A. Peterson},
  year = {1984},
  doi = {10.3133/pp1273a},
  url = {https://pubs.usgs.gov/publication/pp1273A},
  note = {Source identifier: pp1273A}
}