(3GdUhQI GdTYQjI YfO GHi GdbGSe GdTGHi (B/ s - (3eOMJ SYO eMeO GdLHGQs ([S.N] : (3GdOGQ GdYQHjI ddcJGH , s, 1984)
Keywords: (3GdTYQ GdYQHis; (3GdGOH GdYQHis; (3GHhGdbGSe GdTGHis; (3JGQjN hfbOs