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chem102-010-20170310-122001.mp4 duration 50 minutes 0 seconds chem102-010-20170310-122001.mp4 chem102-010-20170310-122001.mp4	chem102-010-20170310-122001.mp4 UD Capture Recording ions +89 More From Dana Chatellier 0 likes 61 plays 0
chem102-010-20170306-122000.mp4 duration 50 minutes 0 seconds chem102-010-20170306-122000.mp4 chem102-010-20170306-122000.mp4	chem102-010-20170306-122000.mp4 UD Capture Recording logarithms +103 More From Dana Chatellier 0 likes 64 plays 0

chem102-010-20170310-122001.mp4