000
00282nam a2200121Ia 4500
008
220201s1923 xx 000 0 eng d
100
_a
Hawkins, CC
245
0
_a
Dynamo, continous current dynamos
250
_a
6
260
_b
NewYork: Pitman
_c
1923
300
_a
322
942
_2
ddc
999
_c
70593
_d
70593