@misc{indiciae2b2e2386a4bc,
  title = {Gravity map of Amchitka and nearby islands, Alaska},
  author = {C.H. Miller and G. D. Bath},
  year = {1969},
  doi = {10.3133/gp693},
  url = {https://pubs.usgs.gov/publication/gp693},
  note = {Source identifier: gp693}
}