@misc{indiciae32d3b993f61d,
  title = {Reconnaissance geologic map of the Iron Springs quadrangle, Yavapai County, Arizona},
  author = {M. H. Krieger},
  year = {1967},
  doi = {10.3133/i504},
  url = {https://pubs.usgs.gov/publication/i504},
  note = {Source identifier: i504}
}