@misc{indiciae91b3e092739a,
  title = {Users manual for RSEC88; interactive computer program for plotting seismic refaction record sections},
  author = {James Howard Luetgert},
  year = {1988},
  doi = {10.3133/ofr88262},
  url = {https://pubs.usgs.gov/publication/ofr88262},
  note = {Source identifier: ofr88262}
}