000 00291nam a2200109Ia 45e0
008 181001s1977 xx 000 0 und d
100 _aBanga & sharma
245 0 _aMechanical estimating & costing
260 _aDelhi
_bKhanna pub.
_c1977
300 _a207
942 _2ddc
_cBK
999 _c2707
_d2707