(3GdUahI ef GdbhGYO GdGYQGHjI (B/ s - (3YHOGdcQje HcGQs ([S.N] : (3OGQ Gdbde ddJQGK , s, 1987)
Keywords: (3GdfMhs; (3GddZI GdYQHjIs; (3GdMQhas; (3GdeVGa hGdeVGa Gdjgs