000 00255nam a2200097Ia 4500
008 220201s9999 xx 000 0 eng d
100 _aSUBASH CHANDER AND KHANNA, AMIT
245 0 _aRAILWAYS BRIDGES AND TUNNELS
260 _bSATYA PARKASHAN
942 _2ddc
999 _c100009
_d100009