Butler旅游地生命周期理论的拓展与实践--以敦煌雅丹国家地质公园为例
Butler여유지생명주기이론적탁전여실천--이돈황아단국가지질공완위례
Extension and Application of Butler’s Resort Life Cycle Theory:A Case Study of Dunhuang Yadan National Geological Park
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