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  Dr. Osama M Ahmed  
  Prof. Dr.  
  Zoology Depatment, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt  
  Zoology Depatment, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt , Egypt, 62514  
  30 Sep 2010 07:29:31 PM