Research Department	
              
          Research Journal	
              Assiut Univ. Bull. Environ. Res. Vol.3, No.2 , October :25-40.
          Research Member	
          
      Research Rank	
              2
          Research Vol	
              Vol.3, No.2 , October :25-40.
          Research Year	
              2000
          Research Pages	
              25-40.