| File | Date | Type | Size | User |
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Jan 28, 2016 4:39 am | Microsoft Powerpoint Document (application/vnd.ms-powerpoint) | 3.82 MB |  yongchen |
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Feb 2, 2014 6:45 am | Microsoft Powerpoint Document (application/vnd.ms-powerpoint) | 5.52 MB | yongchen |