@misc{indiciaeea202df9bb66,
  title = {Preliminary geologic map and sections of the Hogan 4 Southeast quadrangle, Lewis and Clark County, Montana},
  author = {R. G. Schmidt},
  year = {1963},
  doi = {10.3133/i379},
  url = {https://pubs.usgs.gov/publication/i379},
  note = {Source identifier: i379}
}