@misc{indiciaece8d53bdea92,
  title = {Experimental digital shaded-relief maps of California},
  author = {Kathleen Edwards and R. M. Batson},
  year = {1990},
  doi = {10.3133/i1848},
  url = {https://pubs.usgs.gov/publication/i1848},
  note = {Source identifier: i1848}
}