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Subject
- Vietnam War, 1961-197580
- Prisoners of war27
- Foreign relations24
- History24
- Missing in action20
- Prisoners and prisons20
- Politics and government12
- Vietnam War (1961-1975)9
- Indochinese War, 1946-19548
- Prisoners and prisons, North Vietnamese7
- Economic assistance, American6
- Evacuation of civilians6
- Refugees5
- Causes4
- History, Military4
- International relations3
- Armed Forces2
- Cambodians2
- Diplomatic relations2
- Economic conditions2