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- cyberspace operations (military science) (1)
- energy transfer (1)
- force and energy (1)
- international relations (1)
- juvenile nonfiction / concepts / sense & sensation (1)
- juvenile nonfiction / science & nature / general (see also headings under animals or technology) (1)
- juvenile nonfiction / science & nature / physics (1)
- light (1)
- moral and ethical aspects (1)
- nonviolence (1)
- power resources (1)
- sanctions (international law) (1)
- war (1)
- 对比研究 (1)
- 成人教育 (1)
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