(3JGQjN GdGOH GdJhfSi(B: (3SdSdI GdeNJGQGJ(B: (3GdGOH GdMOjK hGdeYGUQ GdTYQ (B, (3GdQhGjI (B/ s - (3eMeO UGdM Hf YeQ(B((3GYOGO(B)s ([S.N] : (3HjJ GdMceI , s, 1990)
Keywords: (3GdGOH GdYQHis; (3JhfSs; (3GdGOH GdJhfSis; (3JGQjN hfbOs