@misc{indiciae271bdfdb5f87,
  title = {Digital colored residual and regional Bouguer gravity maps of the conterminous United States: Comments on significant features},
  author = {T.G. Hildenbrand and R.W. Simpson and R. H. Godson and M. F. Kane},
  year = {1982},
  doi = {10.3133/ofr82284},
  url = {https://pubs.usgs.gov/publication/ofr82284},
  note = {Source identifier: ofr82284}
}