(3GdfSQ (B/ s - (3djfLjd, cGeHs; (3YHOGdMejO GdLeGds ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1988)
Keywords: (3GdbUU GdYdejIs; (3GdbUU GdGeQjcjI GdeJQLeIs; (3GdGOH GdGeQjci GdeJQLes