@misc{indiciaed4c90a8fc91a,
  title = {Geologic map of the Heart Rock quadrangle, McKinley County, New Mexico},
  author = {Jacques F. Robertson},
  year = {1992},
  doi = {10.3133/gq1697},
  url = {https://pubs.usgs.gov/publication/gq1697},
  note = {Source identifier: gq1697}
}