开放与保密:科技信息传播控制及其对创新的影响——以美国科技信息传播控制机制为例
개방여보밀:과기신식전파공제급기대창신적영향——이미국과기신식전파공제궤제위례
Openness and closeness : dissemination control of scientific and technical information and its impact to innovation with dissemination control mechanism of the United States as example
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