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参观者画廊
Prominent guests in our » V.I.P.-gallery.
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27 august 2009 - Kids tour "from coal to sun" |
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25 august 2009 – Delegation from Namhae County, South Korea |
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17 august 2009 – Representatives of Industrial Development Zones in Jiangsu Province, China |
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11 august 2009 - University Duisburg-Essen, geography students |
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04 august 2009 - Readers of the newspaper WAZ |
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03 august 2009 - University Heidelberg, Economic and Social Geography |
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