Telegraphic Code, to Ensure Secrecy in the Transmission of Telegrams

Telegraphic Code, to Ensure Secrecy in the Transmission of Telegrams

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Product details

  • Hardback | 270 pages
  • 156 x 234 x 16mm | 553g
  • Wentworth Press
  • United States
  • English
  • black & white illustrations
  • 1371692343
  • 9781371692346