spartans_in_darkness

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Declassified and approved for release by NSA on 21 December 2007 pursuant to E.O. 12958, as amended MDR 52331 Cover Photo: (U) Sentry atop a bunker complex at the Phu Bai station in 1972
Tep SE6RET::eeMINli'})(1 UNITED STATES CRYPTOLOGIC HISTORY Series VI The NSA Period: 1952 - Present Volume 7 (U) Spartans in Darkness: American SIGINT and the Indochina War~ 1945-1975 Robert J. Hanyok CENTER FOR CRYPTOLOGIC HISTORY NATIONAL SECURITY AGENCY 2002 lQP S~SR~llJSQMINl::X1
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