04:33 duration 4 minutes 33 seconds
CHEM 1211K Dr. Wang - Week 13 (04/12 - 04/16)
04:42 duration 4 minutes 42 seconds
CHEM 1211K Dr. Wang - Week 12 (04/05 - 04/09)
05:32 duration 5 minutes 32 seconds
CHEM 1211K Dr. Wang - Week 11 (03/29 - 04/02)
05:53 duration 5 minutes 53 seconds
CHEM 1211K Dr. Wang - Week 10 (03/22 - 03/26)