@misc{indiciae18398c177d72,
  title = {Digital colored residual and regional Bouguer gravity maps of the conterminous United States with cut-off wavelengths of 250 km and 1000 km},
  author = {T.G. Hildenbrand and R.W. Simpson and R.H. Godsen and M. F. Kane},
  year = {1982},
  doi = {10.3133/gp953a},
  url = {https://pubs.usgs.gov/publication/gp953A},
  note = {Source identifier: gp953A}
}