World Technology Usage Lags
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We present evidence on the differences in the intensity with which ten major technologies are used in 185 countries across the world. We do so by calculating how many years ago these technologies were used in the U.S. at the same intensity as they are used in the countries in our sample. We denote
提供机构：
美国国家经济研究局创建时间：
2006-11-01
