@misc{indiciaeb0f76ec41252,
  title = {Contributions to North American Ethnology, Volume V, Part II: On prehistoric trephining and cranial amulets},
  author = {Robert Fletcher and John Wesley Powell},
  year = {1881},
  doi = {10.3133/70039927},
  url = {https://pubs.usgs.gov/publication/70039927},
  note = {Source identifier: 70039927}
}