TY - GEN AU - E. Missen TI - Elementary telegraphy: covering the syllabus of the city and guilds of london institute examination grade 1 U1 - 621.383 PY - 1946/// CY - George Newnes Limited PB - London KW - E. Missen KW - Elementary telegraphy N1 - Introduction (Page-9) Principles of the State Stop Telegraph System (Page-18) Telegraph Relays (Page-86) Elementary Line Telegraph Transmission (Page-146) Voice frequency Telegraphy (Page-177) Telegraph Circuits (Page-203) Telegraph Instrument Room Equipment (Page-236) Telegraph Signal Distortion (Page-274) Testing and Measuring Apparatus (Page-288) Telegraph Power Supplies (Page-322) ER -