000
00265nam a2200109Ia 4500
008
220201s1950 xx 000 0 eng d
100
_a
Gibbs, JB
245
0
_a
Transformer principle practice
260
_b
Mc Graw Hill Book Co.
_c
1950
300
_a
236
942
_2
ddc
999
_c
72185
_d
72185