(3JcfhdhLjG UfGYI GdUha (B: s (3ZSjd (B- (3UHGZI (B- (3WHGYI (B- (3JLgjR (B/ s - (3GdfLYGhj, CMeO aDGOs ((3GdEScfOQjI (B:s (3efTCI GdeYGQa,s, 1986)
Keywords: (3GdefShLGJs; (3GdUfGYIs; (3GdJLGQIs