@misc{indiciae4dbd10db5290,
  title = {History and dynamics of glaciation in the northern Yellowstone National Park area},
  author = {K. L. Pierce},
  year = {1979},
  doi = {10.3133/pp729f},
  url = {https://pubs.usgs.gov/publication/pp729F},
  note = {Source identifier: pp729F}
}