@misc{indiciae472276daedda,
  title = {Preliminary geologic and structure contour maps of the Oak Spring quadrangle, McKinley County, New Mexico},
  author = {A. R. Kirk and R. S. Zech},
  year = {1976},
  doi = {10.3133/ofr76347},
  url = {https://pubs.usgs.gov/publication/ofr76347},
  note = {Source identifier: ofr76347}
}