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chem102-010-20170515-122000.mp4

UD Capture Recording

From  Dana Chatellier 0 likes 45 plays 0  

chem102-010-20170512-122001.mp4

UD Capture Recording

From  Dana Chatellier 0 likes 42 plays 0  

chem102-010-20170306-122000.mp4

UD Capture Recording

From  Dana Chatellier 0 likes 62 plays 0