chap 9:TG1(7)

1 chap 1:hệ thống 1 

2 chap 2: hệ thống 2 

3 Chap 3:TG1(1) 

4 chap 4:TG1(2) 

5 chap 5:TG1(3) 

6 chap 6: TG1(4) 

7 chap 7:TG1(5) 

8 chap 8: TG1(6) 

9 chap 9:TG1(7) 

10 chap 10:TG1(8) 

11 chap 11:TG1(9) 

12 chap 12: TG1(10) 

13 chap 13:TG1 (11) 

14 chap 14: TG1(12) 

15 chap 15: TG1(13) 

16 chap 16:TG1 (14) 

17 chap 17:TG1 (15) 

18 chap 18:TG1 (16) 

19 chap 19:TG1 (17) 

20 chap 20: TG1 (18) 

21 chap 21: TG1 (19) 