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机译:运输投资的平均和异质效应:撒哈拉以南非洲1960 - 2010年获得访问箭头的证据
George Washington University, USA;
Tufts University, USA;
city; population growth; InvestmentsAccessHighway constructionelasticitytransportprimary powerAfrica south of the SaharaHeterogeneousRoadHETEROGENEOUS EFFECTSRural to urban migration;