@misc{indiciae5724e5b67985,
  title = {Empirical relationship among shot size, shotpoint site condition, and recording distance for 1984-1987 U.S. Geological Survey seismic-refraction data},
  author = {W.M. Kohler and G. S. Fuis},
  year = {1989},
  doi = {10.3133/ofr89675},
  url = {https://pubs.usgs.gov/publication/ofr89675},
  note = {Source identifier: ofr89675}
}