| File | Date | Type | Size | User |
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Apr 21, 2016 1:51 pm | Microsoft Powerpoint Document (application/vnd.ms-powerpoint) | 2.55 MB |  yongchen |
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Mar 31, 2014 8:22 am | Microsoft Powerpoint Document (application/vnd.ms-powerpoint) | 1.19 MB | yongchen |