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Impact of the COVID-19 pandemic on the development of core cities in the Beijing-Tianjin-Hebei urban agglomeration—Taken Beijing, Tianjin, and Shijiazhuang as examples
XIAO Xingyu, MEI Shiyu, LIU Ruiqi, WANG Kuo, DENG Qing, HUANG Lida, YU Feng
Journal of Tsinghua University(Science and Technology) . 2023, (6): 994 -1002 .  DOI: 10.16511/j.cnki.qhdxxb.2023.22.003

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