Classification list of first-tier, quasi-first-tier, second-tier, and third-tier cities.
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https://figshare.com/articles/dataset/Classification_list_of_first-tier_quasi-first-tier_second-tier_and_third-tier_cities_/24134491
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资源简介：
Classification list of first-tier, quasi-first-tier, second-tier, and third-tier cities.
创建时间：
2023-09-13
