000 00333nam a2200133Ia 4500
008 150331s2012 xx 000 0 und d
100 _aUpadhyay, A.K.
245 _aRailway Bridges and Tunnels
250 _a1 st
260 _aNew Delhi
_bS. K. Kataria and Sons
_c2012
300 _a244
700 _aGupta, D.L.
942 _2ddc
_cBK
_01
999 _c1903
_d1903