000 00259nam a2200109Ia 4500
008 220201s1985 xx 000 0 eng d
082 _a621.815
_bGUP
100 _aGupta,RB
245 0 _aT.B of machine drawing
260 _bSatya prakasham
_c1985
942 _2ddc
999 _c83635
_d83635