@misc{indiciae428c0fa0cf41,
  title = {Milwaukee "Hydroseismograms" and their interpretation},
  author = {R.C. Vorhis},
  year = {1953},
  doi = {10.3133/ofr53261},
  url = {https://pubs.usgs.gov/publication/ofr53261},
  note = {Source identifier: ofr53261}
}