@misc{indiciae83df580e6e9b,
  title = {Stratigraphy and correlation of the precambrian belt supergroup of the southern Lewis and Clark Range, Montana},
  author = {G.E. McGill and David A. Sommers},
  year = {1967},
  doi = {10.1130/0016-7606(1967)78[343:sacotp]2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70221357},
  note = {Source identifier: 70221357}
}