chapter 7 ex 71

4:20

3:23

9:10

6:33

36:31

1:40:24

12:54

16:50

1:24:36

3:58

13:57

36:44

22:14

16:38

43:57

9:57

17:56

10:08

22:24

35:24

3:25

4:32

1:01:34

1:01:13

23:57

38:35

6:38

6:59

8:36

6:57

9:32

8:13

7:05

23:08

1:36:26

38:48

1:12:45

6:06

16:00

47:44

58:41

4:37

24:09

35:26

23:07

16:42

59:00

29:03

1:34

1:34

9:32

48:29

9:47

3:49

34:10

6:09

1:35:38

6:02

16:18

6:12