@misc{indiciaec71f21d95991,
  title = {MAGIC; computer programs for paleontologists available on Multics},
  author = {Robert A. Spicer and Richard J. Cullip and Richard Z. Poore},
  year = {1980},
  doi = {10.3133/ofr80317},
  url = {https://pubs.usgs.gov/publication/ofr80317},
  note = {Source identifier: ofr80317}
}