@misc{indiciae66366fef40e6,
  title = {Maps showing relative slope stability and relative erodibility, central Santa Cruz River Valley Tucson area, Arizona},
  author = {B. J. Murphy and R. T. Moore},
  year = {1980},
  doi = {10.3133/i844o},
  url = {https://pubs.usgs.gov/publication/i844O},
  note = {Source identifier: i844O}
}