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chem102-010-20170428-122000.mp4

UD Capture Recording

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chem102-010-20170424-122000.mp4

UD Capture Recording

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chem102-010-20170421-122000.mp4

UD Capture Recording

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chem102-010-20170419-122001.mp4

UD Capture Recording

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chem102-010-20170405-122001.mp4

UD Capture Recording

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chem102-010-20170322-122000.mp4

UD Capture Recording

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chem102-010-20170303-122000.mp4

UD Capture Recording

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