TY  - BOOK
AU  - Bieniawski,Z.T.
TI  - Engineering rock mass classifications : a complete manual for engineers and geologists in mining, civil, and petroleum engineering
AV  - TN260 B54
PY  - 1989///
CY  - New York, N.Y.
PB  - Wiley
KW  - GEOLOGY, ECONOMIC
KW  - ROCKS
KW  - CLASSIFICATION
KW  - ROCK MECHANICS
ER  -