(3EQTGO GdYHGO ddGSJYOGO djhe GdeYGO (B/s - (3GdSdeGf, YHO GdYRjR Hf eMeO Hf YHO GdQMef,s 1337-1422 (3gLQjs ([(3O(B.(3e(B.] :s [(3O(B.(3f(B.] (3,s, 1989)
Keywords: (3GdhYX hGdEQTGOs; (3GdOYhI GdESdGejIs