000 00256nam a2200097Ia 4500
008 230508s2011 xx 000 0 und d
041 _aeng
100 _aDUTTA B.N
245 _aESTIMATION & COSTING IN CIVIL ENGINEERING
260 _bUBS PUBLI.DISTR.PVT
_c2011
999 _c314632
_d314632