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The walking friendliness of ladder trails for the elderly: An empirical study in Chongqing https://journal.hep.com.cn/foar/EN/10.1016/j.foar.2022.03.006
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The walking friendliness of ladder trails for the elderly: An empirical study in Chongqing https://journal.hep.com.cn/foar/EN/10.1016/j.foar.2022.03.006
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