संदर्भ मैनुअल (पूर्ण निर्देश)

168

  
 
 VR
  
          

            
  
B  VR   
 
     
     , 
  
      
     
 
   
 
     
 
 
  
d  M z 
 M  VR M k  
 

( )
  VR      
  
       