@misc{indiciaec2d1c08baea1,
  title = {Geophysical maps of the Dragoon Mountains Roadless Area, Cochise County, Arizona},
  author = {D. P. Klein},
  year = {1983},
  doi = {10.3133/mf1521c},
  url = {https://pubs.usgs.gov/publication/mf1521C},
  note = {Source identifier: mf1521C}
}