@misc{indiciae43bbfb0e4598,
  title = {Geochemistry and Geochronology of Middle Tertiary Volcanic Rocks of the Central Chiricahua Mountains, Southeast Arizona},
  author = {Edward A. du Bray and John S. Pallister and Lawrence W. Snee},
  year = {2004},
  doi = {10.3133/pp1684},
  url = {https://pubs.usgs.gov/publication/pp1684},
  note = {Source identifier: pp1684}
}