- office of the under secretary general
- office of the under-secretary-general
- ousg
- 副秘书长: deputy secretary-general
- 办公室: office
- 秘书长办公室: office of the secretary general
- 主管裁军事务副秘书长办公室: office of the under-secretary-general for disarmament affairs
- 主管行政和管理事务副秘书长办公室: office of the under secretary general for administration and management; office of the under-secretary-general for administration and management
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