@misc{indiciaedcd82c271753,
  title = {Geologic map of Harrat Hutaymah, with petrologic classification and distribution of ultramafic inclusions, Saudi Arabia},
  author = {Carl R. Thornber},
  year = {1990},
  doi = {10.3133/mf2129},
  url = {https://pubs.usgs.gov/publication/mf2129},
  note = {Source identifier: mf2129}
}