47:33 duration 47 minutes 33 seconds
CM Chap 13, Part Two
42:29 duration 42 minutes 29 seconds
CM Chap 11, Part One
34:04 duration 34 minutes 4 seconds
CM Chap 7, Part Two
35:55 duration 35 minutes 55 seconds
CM Chap 7, Part one
40:05 duration 40 minutes 5 seconds
CM Chap 5, Part Two lecture
32:49 duration 32 minutes 49 seconds
CM Chap 5, Part One lecture