20:27 duration 20 minutes 27 seconds
BIOL 1010 Lecture 12 Part 1
25:59 duration 25 minutes 59 seconds
BIOL 1010 Lecture 9 Part 5
32:34 duration 32 minutes 34 seconds
BIOL 1010 Lecture 9 Part 2
32:27 duration 32 minutes 27 seconds
BIOL 1010 Lecture 7 Part 4