@misc{indiciae5342a4d3ac2b,
  title = {Reconnaissance geologic map of the southern third of the Ovando Quadrangle, Powell County, Montana},
  author = {W. Mark Weber and Irving Jerome Witkind},
  year = {1979},
  doi = {10.3133/ofr79447},
  url = {https://pubs.usgs.gov/publication/ofr79447},
  note = {Source identifier: ofr79447}
}