@misc{indiciae815debe11a2c,
  title = {Mineral resource assessment of the Kofa National Wildlife Refuge, Arizona},
  author = {W.C. Bagby and G. B. Haxel and D. B. Smith and R. D. Koch and M. J. Grubensky and D. R. Sherrod and L. G. Pickthorn},
  year = {1987},
  doi = {10.3133/ofr87609},
  url = {https://pubs.usgs.gov/publication/ofr87609},
  note = {Source identifier: ofr87609}
}