000 00258nam a2200097Ia 4500
008 150310s9999 xx 000 0 und d
100 _aDUTTA B N
245 _aESTIMATING AND COSTING IN CIVIL ENGINEERING
250 _a14
260 _c1977
_b"S.DUTTA & CO.,LUCKNOW"
999 _c7059
_d7059