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chem102-010-20170515-122000.mp4

UD Capture Recording

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chem102-010-20170512-122001.mp4

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chem102-010-20170419-122001.mp4

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chem102-010-20170403-122001.mp4

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chem102-010-20170306-122000.mp4

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chem102-010-20170206-122001.mp4

UD Capture Recording

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