| File | Date | Type | Size | User |
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Feb 7, 2016 9:07 pm | Microsoft Powerpoint Document (application/vnd.ms-powerpoint) | 2.35 MB |  yongchen |
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Feb 12, 2014 11:21 am | Microsoft Powerpoint Document (application/vnd.ms-powerpoint) | 3.60 MB | yongchen |