fuel value of coal sample

2:55

3:13

1:17

3:57

19:19

2:10

7:48

2:15

6:04

1:35

2:34

4:39

32:05

4:12

17:33

25:14

37:12

31:10

4:52

3:38

3:20

4:39

5:25

15:17

2:52

1:14

کوتاه

3:21

3:19

15:41

6:24

14:56

20:21

7:00

6:56

2:08

2:18

5:39

13:16

1:31