@misc{indiciae4c691fc14598,
  title = {Generalized geology and structure of the Winkelman 15-minute quadrangle and vicinity, Pinal and Gila Counties, Arizona},
  author = {M. H. Krieger},
  year = {1974},
  url = {https://pubs.usgs.gov/publication/70232443},
  note = {Source identifier: 70232443}
}