@misc{indiciae2c660af24ad7,
  title = {Catalog of earthquakes in the Imperial Valley, California, June 1973-May 1974},
  author = {David P. Hill and Penelope Mowinckel and Karen M. Lahr},
  year = {1975},
  doi = {10.3133/ofr75401},
  url = {https://pubs.usgs.gov/publication/ofr75401},
  note = {Source identifier: ofr75401}
}