@misc{indiciaee46433cfbf79,
  title = {Complete Bouguer gravity map of the southern Black Hills: Parts of southwestern South Dakota and eastern Wyoming},
  author = {T.G. Hildenbrand and R.P. Kucks},
  year = {1981},
  doi = {10.3133/ofr81760},
  url = {https://pubs.usgs.gov/publication/ofr81760},
  note = {Source identifier: ofr81760}
}