@misc{indiciae92b99c812927,
  title = {Principal facts and profiles of gravity data from parts of Meade, Pennington, Haakon, and Jackson Counties, South Dakota},
  author = {Donald L. Peterson and Jerry H. Hassemer},
  year = {1978},
  doi = {10.3133/ofr78198},
  url = {https://pubs.usgs.gov/publication/ofr78198},
  note = {Source identifier: ofr78198}
}