Centralblatt für Elektrotechnik

5.1883 = Bd. 5 Google = MDZ München, California = Google, Princeton = Google
6.1884 = Bd. 6 Google = MDZ München, California = Google, Princeton = Google
7.1885 = Bd. 7 Google = MDZ München, California = Google, Princeton = Google
8.1886 = Bd. 8 Google = MDZ München, California = Google, Princeton = Google
9.1887 = Bd. 9 Google = MDZ München, California = Google
10.1888 = Bd. 10 Google = MDZ München, California = Google, Princeton = Google
11.1889 = Bd. 11/12 Google = MDZ München, California = Google