اخلاق حرفه ای در مذاکرات تجاری

31:52

34:26

12:57

2:27

4:25

19:13

3:11

5:29

00:24

40:03

26:35

3:12

13:19

6:38

9:27

10:00

10:06

11:11

38:58

14:17

8:10

3:49

40:12

4:56

3:17

9:10

3:51

8:38

18:40

11:25

1:13

4:24

42:01

1:55

3:24

9:54

2:42

3:52

22:15

52:30

31:08

4:50

37:58

2:46:56

3:04

55:42

34:27

54:53

1:40

59:35

13:53

1:03:33

57:49

42:39

38:53

00:21

54:43

1:27

31:14

00:59