@misc{indiciae4a9a22bf98aa,
  title = {Geology of sedimentary rocks in southern Yellowstone National Park, Wyoming},
  author = {J. D. Love and W. R. Keefer},
  year = {1975},
  doi = {10.3133/pp729d},
  url = {https://pubs.usgs.gov/publication/pp729D},
  note = {Source identifier: pp729D}
}