Research Abstract	
              NULL
Research Department	
              
          Research Journal	
              Assiut Vet. Med J.
          Research Member	
          
      Research Publisher	
              Faculty of Vet. Med.
          Research Rank	
              2
          Research Vol	
              43
          Research Website	
              NULL
          Research Year	
              1998
          Research Pages	
              13-36
           
          