@misc{indiciaeeb725b419134,
  title = {Ground-squirrel mounds and related patterned ground along the San Andreas Fault in Central California},
  author = {Robert E. Wallace},
  year = {1991},
  doi = {10.3133/ofr91149},
  url = {https://pubs.usgs.gov/publication/ofr91149},
  note = {Source identifier: ofr91149}
}