TY  - BOOK
AU  - AFROUZ, ANDY A.
TI  - PRACTICAL HANDBOOK OF ROCKMASS CLASSIFICATION SYSTEMS AND MODES OF GROUND FAILURE
SN  - 0-0499-3711-9
U1  - 622.22 
PY  - 1992///
CY  - BOCA RATAN 
PB  -  CRC PRESS
ER  -