000 00313nam a2200109Ia 45e0
008 181001s1977 xx 000 0 und d
100 _aB.N. Dutta
245 0 _aEstimating and costing in civil Engg.
260 _aLucknow
_bS.Dutta & com.
_c1977
300 _a906
942 _2ddc
_cBK
999 _c2633
_d2633