(3CSGWjQ aj CUd GdfGQ (B/ s - (3aQjRQ, LjeSs; (3TdH GdTGe, jhSas ((3OeTb (B:s (3OGQ GdcfOj ddJQLeI hGdfTQ hGdJhRjY,s, 1988)
Keywords: (3GdfGQs; (3CSGWjQs