TY  - BOOK
AU  - Francis,F.O.
TI  - Weak rock tunneling: a simplified analytical simulation, a PC-based model and design charts for engineering practice 
SN  - 9054101458
PY  - 1994///
CY  - Rotterdam
PB  - A. A. Balkema
KW  - Tunneling
KW  - Rock excavation
KW  - Equipment and supplies
ER  -