@misc{indiciae36c98caf59a6,
  title = {Design of simple punched card systems with reference to geochemical problems},
  author = {Irving A. Breger},
  year = {1958},
  doi = {10.2113/gsecongeo.53.3.325},
  url = {https://pubs.usgs.gov/publication/70211915},
  note = {Source identifier: 70211915}
}