Digital Dark Matter and the Economic Contribution of Apache
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Researchers have long hypothesized that spillovers from government, university, and private company R&D contribute to economic growth, but these contributions may be difficult to measure when they take a non-pecuniary form. The growth of networking devices and the Internet in the 1990s and 2000s
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美国国家经济研究局创建时间：
2013-10-01
