@misc{indiciae61392b45b269,
  title = {Bouguer gravity map of Colorado},
  author = {John C. Behrendt and L.Y. Bajwa},
  year = {1974},
  doi = {10.3133/gp895},
  url = {https://pubs.usgs.gov/publication/gp895},
  note = {Source identifier: gp895}
}