@misc{indiciae41eab784cb97,
  title = {Plan of study of the hydrology of the Madison Limestone and associated rocks in Montana, Nebraska, North Dakota, South Dakota, and Wyoming},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1975},
  doi = {10.3133/ofr75631},
  url = {https://pubs.usgs.gov/publication/ofr75631},
  note = {Source identifier: ofr75631}
}