@misc{indiciaef3a0cad7f937,
  title = {Photogeologic map of the Springdale SE quadrangle, Kane County, Utah},
  author = {C. L. Pillmore},
  year = {1956},
  doi = {10.3133/i131},
  url = {https://pubs.usgs.gov/publication/i131},
  note = {Source identifier: i131}
}