@misc{indiciaede1f27443ecc,
  title = {Geologic Names of the United States through 1986 in the GEONAMES Data Base},
  author = {G. W. Luttrell and M.L. Hubert and C.R. Murdock},
  year = {1988},
  doi = {10.3133/ofr8844},
  url = {https://pubs.usgs.gov/publication/ofr8844},
  note = {Source identifier: ofr8844}
}