People's Army of Veitnam Cryptographic Branch History
UNITED STATES CRYPTOLOGIC HISTORY
Special Series Number5
Essential Matters
A
History of the Cryptographic Branch of the People's Army of Viet-Nam, 1945-1975
with a
supplement on
Cryptography in the Border Guard (formerly the Armed Public
Security Forces) 1959-1989
Translated and Edited by
DAVID W. GADDY
Center for Cryptologic
History
National Security
Agency1994
Download the PDF. (106
megabytes.)

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