@misc{indiciae22e9ec8e76ab,
  title = {Diamond-drill exploration of the Dillsburg magnetite deposits, York County, Pennsylvania},
  author = {Preston Enslow Hotz},
  year = {1950},
  doi = {10.3133/b969a},
  url = {https://pubs.usgs.gov/publication/b969A},
  note = {Source identifier: b969A}
}