000 00286nam a2200121Ia 4500
008 220201s1977 xx 000 0 eng d
082 _a621.3022
_bSUR
100 _aSurjit Singh
245 0 _aTb of electrical drawing design
260 _bP.K & Co
_c1977
300 _a138
942 _2ddc
999 _c81728
_d81728