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Subject
- Armed Forces2
- Biological weapons1
- Chemical weapons1
- China. Zhongguo ren min jie fang jun1
- Civil defense1
- Cold War3
- Cold War (1945-1989)1
- Defenses2
- Diplomatic relations2
- Electronic surveillance1
- Espionage, American1
- Espionage, British1
- Foreign relations2
- Government policy1
- History4
- Intelligence service1
- Korean War, 1950-19531
- Military art and science3
- Military engineering1
- Military history, Modern1