TY  - BOOK
AU  - CANADIEM NATIONLAL
TI  - UNDERGROUND ROCK ENGINEERING: 13TH CANDIAN ROCK MECHANICS SYPOSIUM
T2  - 0
U1  - 552 
PY  - 1980///
CY  - CANADA
PB  - THE CANDIAN INSTITUTE
KW  - CIENCIAS PURAS
N1  - MEASUREMENTS-HISTORIES ROCK MECHANICS
ER  -