000 00289nam a2200121Ia 4500
008 220201s1984 xx 000 0 eng d
082 _a621.9
_bGUP
100 _aGupta&Kaushik
245 0 _aWorkshop tecnology theory& practice
260 _bNew Hight
_c1984
300 _a390
942 _2ddc
999 _c82964
_d82964