(3OQGSI ai TYQ fGRc GdedGFcI (B/ s - (3eMeO YHOGdefYe NGWQs ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1990)
Keywords: (3GdTYQ GdYQHis; (3GdGOH GdYQHis; (3OhGhjf hbUGFOs; (3fGRc GdedGFcIs; (3JGQjN hfbOs