TY - BOOK AU - Singh,Bhawani AU - Goel,Rajnish K. TI - Tunnelling in weak rocks T2 - Elsevier geo-engineering book series SN - 0080449875 AV - TA805 .S56 2006 PY - 2006/// CY - Amsterdam PB - Elsevier KW - Tunneling KW - Tunnels KW - Design KW - Rock mechanics ER -