TY  - RPRT
TI  - Empirical relationship among shot size, shotpoint site condition, and recording distance for 1984-1987 U.S. Geological Survey seismic-refraction data
AU  - W.M. Kohler
AU  - G. S. Fuis
PY  - 1989
DO  - 10.3133/ofr89675
UR  - https://pubs.usgs.gov/publication/ofr89675
ID  - ofr89675
ER  -