@misc{indiciae7d03d72afa18,
  title = {Digital earth science database, Caballo resource area, Sierra and Otero Counties, south-central New Mexico},
  author = {G.N. Green and J.M. O’Neill},
  year = {1998},
  doi = {10.3133/ofr98780},
  url = {https://pubs.usgs.gov/publication/ofr98780},
  note = {Source identifier: ofr98780}
}