Telegraphists' guide to the new examinations in technical telegraphy
Subtitle: Together with an appendix dealing with dry and secondary cells, univeral battery system, direct reading battery instrument, duplex (bridge method), new system of morning testing, fast speed repeaters, &c
By: By James Bell, A.I.E.E. ...
Publisher: "Electricity"
Published: 1895
Place of publication: London
Language: eng
Number of pages: 101