000 00298nam a2200121Ia 4500
008 220201s1971 xx 000 0 eng d
082 _a624.1042
_bDUT
100 _aDutta,BN
245 0 _aEstmating and costing in civil engg.
260 _bLucknow:Tagore Pub.
_c1971
300 _a880
942 _2ddc
999 _c78823
_d78823