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Endogenous Technological ChangePaul M. RomerThe Journal of Political Economy, Vol. 98, No. 5, Part 2: The Problem of Development: AConference of the Institute for the Study of Free Enterprise Systems. (Oct., 1990), pp. S71-S102.
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这个上传干吗?哪个期刊网都有呀
不是书,是一篇论文啊