000 00283nam a2200109Ia 4500
008 220601s2011 xx 000 0 eng d
100 _aSAXENA,SUBASH C.
245 0 _aTUNNEL ENGINEERING
250 _a1st Ed.
260 _c2011
_aNew Delhi
_bDHANPAT RAI PUBLICATIONS
942 _2ddc
_cBTECH
999 _c3112
_d3112