@misc{indiciaeda2835e219a6,
  title = {Lower ordovician section near Chambersburg, Pennsylvania},
  author = {William Jasper Sando},
  year = {1958},
  doi = {10.1130/0016-7606(1958)69[837:losncp]2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70211917},
  note = {Source identifier: 70211917}
}