00346nam a22001217a 4500082002500000100001700025245003400042260003500076300003100111526003700142526003700179650000800216  a625bVAZcN-02, P-20  aVazirani V.N  aRailways, Bridges and Tunnels  aDelhibKhanna Publishersc2012  a199, 88 p. :bill. :c6 Cm  a0b0c0d625_000000000000000_VAZ  a0b0c0d625_000000000000000_VAZ  aMCE