@misc{indiciae76fd51a1abd3,
  title = {Eocene mollusks from Eua, Tonga},
  author = {H. S. Ladd},
  year = {1970},
  doi = {10.3133/pp640c},
  url = {https://pubs.usgs.gov/publication/pp640C},
  note = {Source identifier: pp640C}
}