Bieniawski, Z.T.
Engineering rock mass classifications : a complete manual for engineers and geologists in mining, civil, and petroleum engineering - New York, N.Y. : Wiley, 1989 - 251
GEOLOGY, ECONOMIC
ROCKS--CLASSIFICATION
ROCK MECHANICS
TN260 / B54
Engineering rock mass classifications : a complete manual for engineers and geologists in mining, civil, and petroleum engineering - New York, N.Y. : Wiley, 1989 - 251
GEOLOGY, ECONOMIC
ROCKS--CLASSIFICATION
ROCK MECHANICS
TN260 / B54