@misc{indiciae0fc6446dcc9b,
  title = {Geology and ground-water resources of Iwo Jima},
  author = {F. A. Swenson},
  year = {1948},
  doi = {10.1130/0016-7606(1948)59[995:gagroi]2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70215693},
  note = {Source identifier: 70215693}
}