TY  - BOOK
AU  - Bickel, John O.
TI  - Tunnel engineering handbook
SN  - 9798123905432
U1  - 624.193 
PY  - 2004///
CY  - New Delhi
PB  - CBS Publishers
KW  - Civil engineering
N1  - Includes index; N. E. Book, Silchar
ER  -