000 00287nam a2200121Ia 4500
008 220201s1989 xx 000 0 eng d
082 _a621.9
_bGUP
100 _aGupta, RB
245 0 _aWorkshop technology
260 _bNew Delhi : Satya prakashan
_c1989
300 _a319
942 _2ddc
999 _c84894
_d84894