(3GdMOGKI GdYHGSjI ai bQWHI(B: (3OQGSI ai fTGI GdehTMGJ GdGfOdSjI (B/ s - (3SdjeGf GdYWGQs ([S.N] : (3OGQ GdKbGaI ddfTQ hGdJhRjY , s, 1991)
Keywords: (3GdGOH GdYQHis; (3GdTYQ GdZfGFis; (3GdehTMGJs; (3GdehTMGJ GdGfOdSjIs; (3JGQjN hfbOs