(3YeQ Hf GdNWGH (B:s (3bGVjG heTQYG (B/s - (3agej, eMeO YGQa eUWais ((3GdbGgQI (B:s (3ecJHI GdCfLdh GdeUQjI,s, 1970)
Keywords: (3YeQ Hf GdNWGH Hf fajd GdbQTj,s -- 40 (3bHd GdgLQI(B-23 (3gLQjs; (3GdbVGA aj GdESdGes; (3GdUMGHI hGdJGHYhfs -- (3JQGLes; (3GdNdaGA GdQGTOhfs -- (3JQGLes