संदर्भ मैनुअल

146
P, S, A  M 
❚❚
   
   

      
    

    
1  
   
 
 
  

  
   
  2   
 
 
 2 
2   
  
  
  
 2

3 
  

 
 2  (
      

     
   
)
4  
      
 2 