@misc{indiciae90818d9f3a03,
  title = {Preliminary geologic map of Agua de Pau volcano, Sao Miguel, Azores},
  author = {Richard B. Moore},
  year = {1986},
  doi = {10.3133/ofr86192},
  url = {https://pubs.usgs.gov/publication/ofr86192},
  note = {Source identifier: ofr86192}
}