A System of Train-Signalling, by Which Also Disabled Trains May Telegraph for Assistance without the Aid of Portable Apparatus.

✍ Scribed by Walker, C. V.

• Book ID: 120128510
• Publisher: The Royal Society
• Year: 1857
• Weight: 172 KB
• Volume: 8
• Category: Article
• ISSN: 0365-0855
• DOI: 10.1098/rspl.1856.0108