| Friends' Slides Collection: Set 018: Page 019ad: UNESCO World Heritage Sites 世界文化與自然遺產 世界文化与自然遗产 |
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| View PPS Slide: UNESCO World Heritage Sites 世界文化與自然遺產 世界文化与自然遗产 received from Phoenix River Chen 陳鳳河 陈凤河 |
