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The International Exhibition in Plovdiv was an international exhibition that was held from June 7 to July 7 of 1991 in the city of Plovdiv, Bulgaria, under the theme of "The creative activity of young inventors at the service of a world peace." The exhibition was coordinated by the Bureau of International Expositions.〔(【引用サイトリンク】accessdate=22 December 2011 )〕 ==Organizers== The organizers of the exhibition were: *The Ministry of Economy and Planning of Bulgaria. *The Chamber of Commerce and Industry of Bulgaria. *The Republican Council of scientific and technical creativity of the youth of Bulgaria. *International Foundation "Ludmila Jivkova". *The Institute of inventions and rationalizations. The exhibition was organized with the cooperation of the World Intellectual Property Organization, a specialized agency of the United Nations. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Expo 91」の詳細全文を読む スポンサード リンク
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