@misc{indiciae0e2a79703574,
  title = {Seismograph station codes and characteristics},
  author = {Barbara B. Poppe and Debbi A. Naab and John S. Derr},
  year = {1978},
  doi = {10.3133/cir791},
  url = {https://pubs.usgs.gov/publication/cir791},
  note = {Source identifier: cir791}
}