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>The Opening Ceremony of the International Research Center on Karst under the Auspices of UNESCO was held in Guilin on 15 December,2008
The Opening Ceremony of the International Research Center on Karst under the Auspices of UNESCO was held in Guilin on 15 December,2008
@@ The Opening Ceremony of the International Research Center on Karst under the Auspices of UNESCO was held in the Institute of Karst Geology,Chinese Academy of Geological Sciences in Guilin on 15 December,2008.
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