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ベトナム - Wikipedia
Vietnam - Wikipedia
ベトナム観光ガイド | 地球の歩き方
Vietnam | History, Population, Map, Flag, Government, & Facts
Visit Vietnam: The Official Tourism Website of Vietnam
Home | Vietnam Tourism
Vietnam - The World Factbook
Vietnam travel guide - Lonely Planet | Asia
Vietnam country profile - BBC News
「ベトナム」のニュース - CNN.co.jp