@misc{indiciae73f3816542a0,
  title = {Complete Bouguer and free-air gravity anomaly maps of the Rat Islands west of Amchitka Island, Alaska},
  author = {D.L. Healey and J.D. Kibler},
  year = {1976},
  doi = {10.3133/gp909},
  url = {https://pubs.usgs.gov/publication/gp909},
  note = {Source identifier: gp909}
}