(3OjhGf TjN GdESdGe EHf Jjejg (B/ s - (3EHf Jjejg, Jbj GdOjf CHh GdYHGSs; (3YHO GdQMje, eMeOs ((3HjQhJ (B:s (3OGQ GdLjd,s, 1991)
Keywords: (3GdTYQ GdYQHjs; (3GdYUQ GdYHGSjs