@misc{indiciae56a3862f084d,
  title = {Geology of the Libby thrust belt of northwestern Montana and its implications to regional tectonics},
  author = {J. E. Harrison and E. R. Cressman},
  year = {1993},
  doi = {10.3133/pp1524},
  url = {https://pubs.usgs.gov/publication/pp1524},
  note = {Source identifier: pp1524}
}