@misc{indiciaef0729dad47da,
  title = {Coal-seismic, desk-top computer programs in BASIC; Part 4, Transfer, edit, and display observed data},
  author = {W.P. Hasbrouck},
  year = {1980},
  doi = {10.3133/ofr80668},
  url = {https://pubs.usgs.gov/publication/ofr80668},
  note = {Source identifier: ofr80668}
}