TY  - BOOK
ED  - International conference on rock mechanics (1974 : Denver)
TI  - Proceeding on rock mechanics
U1  - H2:82p1,N74, L9.1-.3 
PY  - 1979///
CY  - Rotterdam
PB  - A A Balkema       
KW  -  Rock mechanics
KW  - Geology
ER  -