000 00323nam a2200133Ia 4500
005 20260413100834.0
008 230516s9999||||xx |||||||||||||| ||und||
100 _aDutta B N
245 0 _aEstimating & costing in civil engg
260 _bN Delhi UBS
_c2013
300 _a898
942 _cGB
999 _c4880
_d4880