writing formula for lead iv sulfide

10:38

5:12

3:12

24:59

3:43

13:25

3:09

4:39

4:39

8:08

8:08

6:42

1:10

8:13

5:39

کوتاه

37:43

23:15

23:15

4:56

13:12

2:26

6:45

5:54

6:07

6:07

1:01

1:48

12:45

کوتاه

6:32

3:45

9:13

10:39

4:30

12:12

3:49

11:56

11:56

4:30