@misc{indiciae20bbac1fdd71,
  title = {Map showing distribution pattern of molybdenum from samples of the nonmagnetic fraction of heavy-mineral concentrates, northern Sonora, Mexico},
  author = {James G. Frisken and R. L. Turner and T. M. Billings and Guillermo Monroy and Benjamin Ponce},
  year = {1977},
  doi = {10.3133/ofr77332},
  url = {https://pubs.usgs.gov/publication/ofr77332},
  note = {Source identifier: ofr77332}
}