(3GeQGA hZRGI(B: (3bUI GdMOhO hGdSjGOI GdGbdjejI ai GdNdjL(B: (3OQGSI hKGFbjI (B/ s - (3YHOGdYRjR YHOGdZfi GHQGgjes ([S.N] : (3OGQ GdSGbi , s, 1991)
Keywords: (3JGQjNs; (3GdNdjL GdYQHis; (3GdMOhO GdSjGSjIs