000 00297nam a2200121Ia 4500
999 _c13277
_d13277
100 _aGupta D L
245 _aText Book of Railways Bridges and Tunnels
250 _a2
260 _c1984
_bKATSON PUBLISHING
_aLudhiana
300 _aviii+138+142+29
700 _aSupple O P
_aSharma O P
942 _cBK