(3LZQGajI EaQjbjG (B: s (3OQGSI EbdjejI ddbGQI eY GdJWHjb Ydi Ohd LfhH GdUMQGA (B/ s - (3CHh YjGfI, aJMj eMeOs ((3GdEScfOQjI (B:s (3OGQ GdeYQaI GdLGdeYjI,s, 1987)
Keywords: (3EaQjbjGs; (3GdLZQGajGs