Government Code and Cypher School: Security of Allied Cyphers Section: Security Files on Allied World War II Communications. Portuguese/Macao: possible deception operations in Macao.HW 40/252

Summary: 
Government Code and Cypher School: Security of Allied Cyphers Section: Security Files on Allied World War II Communications. Portuguese/Macao: possible deception operations in Macao.
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Category: 
  • United Kingdom
  • The First-Half of the Twentieth Century
  • British Ambassador's reports on Macau political and economic situations during 1900 and 1949