@misc{indiciae95dccb55bec1,
  title = {Pumice and pozzolan deposits in the Lesser Antilles},
  author = {Edwin Butt Eckel},
  year = {1960},
  doi = {10.3133/ofr6048},
  url = {https://pubs.usgs.gov/publication/ofr6048},
  note = {Source identifier: ofr6048}
}