Spatial-temporal Pattern and Causes for GDP per Capita at County Level in Beijing-Tianjin-Hebei Region
Xiumei TANG, Yunbing GAO, Yu LIU, Chao SUN
Acta Scientiarum Naturalium Universitatis Pekinensis . 2017, (6): 1089 -1098 .  DOI: 10.13209/j.0479-8023.2017.128

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