أنبوب average-proportions (1981)

1 min 47 secs

1 min 35 secs

1 min 41 secs

1 min 40 secs

2 mins 30 secs

1 min 19 secs

2 mins 2 secs

30 secs

1 min 33 secs

1 min 2 secs

1 min 7 secs

1 min 4 secs

1 min 8 secs

1 min 58 secs

5 mins 25 secs

40 mins 11 secs

10 mins 50 secs

11 mins 19 secs

10 mins 21 secs

20 mins 40 secs

10 mins

20 mins 55 secs

21 mins 14 secs

5 mins

10 mins

10 mins 48 secs

15 mins