@misc{indiciaec90db2f2c331,
  title = {Reconnaissance geologic map of the Greenough Quadrangle, Missoula County, Montana},
  author = {W. Mark Weber and Irving Jerome Witkind},
  year = {1979},
  doi = {10.3133/ofr79443},
  url = {https://pubs.usgs.gov/publication/ofr79443},
  note = {Source identifier: ofr79443}
}