TY  - RPRT
TI  - An engineering rock classification to evaluate seismic rock-fall susceptibility and its application to the Wasatch Front
AU  - E. L. Harp
AU  - M.A. Noble
PY  - 1993
DO  - 10.2113/gseegeosci.xxx.3.293
UR  - https://pubs.usgs.gov/publication/70017865
ID  - 70017865
ER  -