@misc{indiciae77cb4bf124be,
  title = {Field instrumentation studies of earth tremors and their geologic environments in central Utah coal mining areas},
  author = {Frank W. Osterwald and J.B. Bennetti and C.R. Dunrud and J. O. Maberry},
  year = {1971},
  doi = {10.3133/pp693},
  url = {https://pubs.usgs.gov/publication/pp693},
  note = {Source identifier: pp693}
}