primary types of soil minerals

10:03

4:43

4:30

10:57

5:17

4:32

2:56

3:21

11:25

2:35

1:10

15:27

6:00

1:37

14:13

4:00

4:48

15:24

9:22

1:13

5:54

2:50

3:03

3:16

2:25

4:48

3:13

5:48

4:10

3:47

6:01

4:44

1:07

2:26

5:34

00:47

3:03

9:11

16:04

1:59

5:42

3:26

14:28

3:54

7:31

8:05

6:41

10:52

3:58

3:21

2:24

2:54

15:04

25:27

5:37

27:19

27:36

17:04

6:47

7:27