(3fXQjI GdZdW ai GdbGfhf GdQheGfi (B/ s - (3YHOGdeLjO eMeO GdMafGhis ([S.N] : (3ecJHg GdfgVg GdeUQjg , s, 1974)
Keywords: (3GdbGfhfs; (3adSaIs; (3GdbGfhf GdQheGfis