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Spatial heterogeneity and influencing factors of urban emergency services
TIAN Fengshi, SUN Zhanhui, ZHENG Xin, YIN Yanfu
Journal of Tsinghua University(Science and Technology) . 2023, (6): 888 -899 .  DOI: 10.16511/j.cnki.qhdxxb.2023.22.004

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