@misc{indiciaec40275b508e5,
  title = {Petrology of the limestones of Guam, with a section on petrography of the insoluble residues},
  author = {S.O. Schlanger and J.C. Hathaway and Dorothy Carroll},
  year = {1964},
  doi = {10.3133/pp403d},
  url = {https://pubs.usgs.gov/publication/pp403D},
  note = {Source identifier: pp403D}
}