@misc{indiciae1889cd54b45f,
  title = {Mineral resource potential of the El Malpais Instant Study Area and adjacent areas, Valencia County, New Mexico},
  author = {P. R. Bigsby and C. H. Maxwell},
  year = {1981},
  doi = {10.3133/ofr81557},
  url = {https://pubs.usgs.gov/publication/ofr81557},
  note = {Source identifier: ofr81557}
}