@misc{indiciaec6663c1233dd,
  title = {Bouguer gravity and generalized elevation maps of Colorado},
  author = {John C. Behrendt and LaCretia Y. Bajwa},
  year = {1974},
  doi = {10.3133/gp896},
  url = {https://pubs.usgs.gov/publication/gp896},
  note = {Source identifier: gp896}
}