lecture Tiub (801) 15

14 mins 26 secs

7 mins

5 mins 10 secs

1 min 15 secs

9 mins

51 secs

3 mins 45 secs

1 min 20 secs

2 mins 47 secs

11 mins 1 sec

42 secs

1 min 2 secs

3 mins 20 secs

7 mins 13 secs

8 mins

7 mins 1 sec

31 secs

10 mins 30 secs

1 min 53 secs

32 mins 26 secs

6 mins 5 secs

9 mins 26 secs

5 mins 54 secs

23 mins

7 mins 58 secs

6 mins 21 secs

7 mins 53 secs