Messengers for mankind /
Saved in:
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
London :
Hutchinson,
[1940?].
|
| Series: | Hutchinson's illustrated library of modern knowledge ;
no. 5 Conquest of space and time |
| Subjects: |
Table of Contents:
- Signals and codes
- General post
- Faraday
- Electric telegraphy
- The telephone
- Wireless
- Cables and cable laying
- Transmission of pictures
- Broadcasting.