TY  - BOOK
AU  - Dreyer, Ing W.
TI  - Science of rock mechanics
T2  - Series on rock and soil mechanics; v.1 no.2
SN  - 0878490027
U1  - 552.06 
PY  - 1972///
CY  - Clausthal
PB  - Trans Tech
N1  - Contents:pt.1.the strength properties of rocks
ER  -