000 00255nam a2200097Ia 4500
008 150310s9999 xx 000 0 und d
100 _aDUTTA B.N
245 _aESTIMATING AND COSTING IN CIVIL ENGINEERING
250 _a9
260 _c1969
_bPROF.B.N.DUTTA TUCKNOW
999 _c4605
_d4605