000 00285nam a2200121Ia 4500
008 220201s9999 xx 000 0 eng d
082 _a621.9
100 _aThukral,RP & Sachdeva
245 0 _aEngineering tools
260 _bLudhiana:Katson pub. House
300 _a113
942 _2ddc
999 _c74400
_d74400