Ŀ
                                                                       
           
                                                                       
   (  6-7 )    
                                                                       
    .                      
                                                                       
      ,    ,-  
                                                                       
       . - 
                                                                       
    ,   - 
                                                                       
  ,  .  -
                                                                       
 - -   -.    
                                                                       
             
                                                                       
   ,    - 
                                                                       
    .                   
                                                                       
        ,  - 
                                                                       
  ,     4.3  
                                                                       
.  .                                      
                                                                       
      ,  1  1991,    
                                                                       
         -  
                                                                       
     - 
                                                                       
    ,  ,     
                                                                       
   .    - 
                                                                       
    ,  -
                                                                       
    ,   -  
                                                                       
 .                                                 
                                                                       
              
                                                                       
.      - 
                                                                       
       -
                                                                       
:5,10,15,20,30,60,75 ..   .    
                                                                       
         -
                                                                       
  ,    - 
                                                                       
.                                                                 
                                                                       
       , 
                                                                       
 -Ĵ
                                                                 
                    .34.-1                Ĵ
                                                                     

                                                                                                                                                                                                     
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