@misc{indiciae4c166521a7da,
  title = {Geologic maps of a part of the Las Vegas Basin and of the foothills of the Sangre de Cristo Mountains, San Miguel and Mora Counties, New Mexico},
  author = {Stuart Alvord Northrop and H.H. Sullwold and A.J. MacAlpin and C.P. Rogers},
  year = {1946},
  doi = {10.3133/om54},
  url = {https://pubs.usgs.gov/publication/om54},
  note = {Source identifier: om54}
}