1991

来源:  发表时间:2010-04-09 13:49:36 

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地点:保加利亚普罗夫迪夫(Place:Plovdiv Bulgaria )

会期:1991/6/7-1991/7/7 (Duration:1991/6/7-1991/7/7 )

名称:第二届青年发明家成果博览会(Title:Second World Exhibition of achievements of the young inventors, Bulgaria 1991 )

主题:和平世界的青年运动(Theme:Youth activity for a peace World )

类别:专业类(Category:Special Exhibition )

 

编辑: 丹丹