@misc{indiciae311c80267984,
  title = {TURBOSEIS : an interactive program for constructing and editing models of seismic refraction traveltime data using a color-graphics terminal, Part A},
  author = {Bruce A. Chuchel},
  year = {1989},
  doi = {10.3133/ofr89567a},
  url = {https://pubs.usgs.gov/publication/ofr89567A},
  note = {Source identifier: ofr89567A}
}