@misc{indiciae39bcfeabb702,
  title = {Coal-seismic, desk-top computer program in BASIC; Part 2, Enter, compute, display, edit, and store results of downhole, inhole, and crosshole investigations},
  author = {W.P. Hasbrouck},
  year = {1980},
  doi = {10.3133/ofr80669},
  url = {https://pubs.usgs.gov/publication/ofr80669},
  note = {Source identifier: ofr80669}
}