000 00270nam a2200121Ia 4500
008 220201s1972 xx 000 0 eng d
082 _a621.9
_bGUP
100 _aGupta,KN
245 0 _aWorkshop Technology
260 _bNew heights
_c1972
300 _a488
942 _2ddc
999 _c79370
_d79370