রেফারেন্স পুস্তিকা

251
B  :  -
 
G  B  
❚❚ F   
Fn   

    
Fn 
 
v
 /
    (0 85)  Fn   
   
w
ISO 
ISO  (0 95)  Fn     
 
m
 
Fn          n
  (t P,
S, A,  M ; 0 124)
!
 D-Liti
Fn         
D-Lighig   (t P, S, A,  M ;
0 122)