000 00273nam a2200109Ia 4500
008 220201s1977 xx 000 0 eng d
082 _a621.9
_bAGG
100 _aAggarwal, KB & Singla, DR
245 0 _aWorkshop technology
260 _bLudhiyana: Katson
_c1977
942 _2ddc
999 _c80671
_d80671