000 00798nam a2200217Ia 45e0
008 181001s1969 xx 000 0 und d
100 _aDutta B.N.
245 0 _aEstimating & costing
260 _aLucknow
_bDatta book Lucknow
_c1969
300 _a848
942 _2ddc
_cBK
999 _c694
_d694