000
00251nam a2200109Ia 4500
008
220201s1981 xx 000 0 eng d
100
_a
Kalsi, NJS
245
0
_a
Electrical engg
260
_b
Technical book centre
_c
1981
300
_a
123
942
_2
ddc
999
_c
82209
_d
82209