000 00306nam a2200133Ia 4500
008 220201s1991 xx 000 0 eng d
082 _a670
_bGUP
100 _aGupta, RB
245 0 _aProduction technology
250 _a6
260 _bNew Delhi : Satya prakashan
_c1991
300 _a1795
942 _2ddc
999 _c84915
_d84915