@misc{indiciaebea3a9eca4ce,
  title = {Geologic map of El Malpais lava field and surrounding areas, Cibola County, New Mexico},
  author = {C. H. Maxwell},
  year = {1986},
  doi = {10.3133/i1595},
  url = {https://pubs.usgs.gov/publication/i1595},
  note = {Source identifier: i1595}
}