@misc{indiciae5fea9223df1a,
  title = {Geologic map of the Romoland 7.5-minute Quadrangle, Riverside County, California},
  author = {Douglas M. Morton},
  year = {1991},
  doi = {10.3133/ofr90701},
  url = {https://pubs.usgs.gov/publication/ofr90701},
  note = {Source identifier: ofr90701}
}