000 00271nam a2200109Ia 4500
008 220201s1977 xx 000 0 eng d
100 _aDUTTA B N
245 0 _aESTIMATING AND COSTING IN CIVIL ENGINEERING
260 _aDELHI
_bDUTTA S
_c1977
300 _a989
942 _2ddc
999 _c89566
_d89566