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第二章：旅游产业区域效应研究的基础理论。
Chapter II: the basic theories of tourism industry regional effect research.
youdao
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第四章是有关生态旅游的基础理论。
Chapter 4 is about the basis theory of ecotourism.
youdao
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第四章是有关生态旅游的基础理论。
Chapter 4 is about the basis theory of ecotourism.
youdao