@misc{indiciaeb388cec9cc39,
  title = {Seismic refraction study of crustal structure in the western United States},
  author = {Claus Prodehl},
  year = {1970},
  doi = {10.1130/0016-7606(1970)81[2629:srsocs]2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70226577},
  note = {Source identifier: 70226577}
}