@misc{indiciae84c6a5effc18,
  title = {Total intensity aeromagnetic map of parts of San Miguel and Guadalupe Counties, New Mexico (R. 16 E.-R. 21 E. and T. 6 N.-T. 10 N. and part of Anton Chico grant)},
  author = {William J. Dempsey and M. E. Hill},
  year = {1950},
  doi = {10.3133/gp18},
  url = {https://pubs.usgs.gov/publication/gp18},
  note = {Source identifier: gp18}
}