properties and types of core

2:12

4:11

5:56

16:36

3:37

2:57

1:29:00

1:24:09

1:23:32

22:23

2:48

1:18:05

1:10:15

28:23

54:07

11:55

2:01:20

4:22

41:13

5:16

3:00

16:39

2:43

1:08:45

9:00

2:45

6:24

15:22

15:37

15:15

1:17

9:49

9:49

2:03

49:55

4:13

52:47

2:39

2:07

4:38