000 00247nam a2200097Ia 4500
008 220201s9999 xx 000 0 eng d
100 _aCHANDER, (S) & KHANNA, (A.)
245 0 _aRAILWAYS BRIDGES & TUNNELS
260 _bSATYA PRAKASHAN
942 _2ddc
999 _c99854
_d99854