000 00277nam a2200097Ia 4500
008 231107s1990 xx 000 0 und d
041 _aeng
100 _aB.N.Datta
245 _aEstamating & Costing in Civil Engg.
260 _aNew Delhi
_bUBS Publishers Distributers Pvt.Ltd
_c1990
999 _c922025
_d922025