(3eaGgje fbOjI (B/ s - (3hjdjc , QjfjIs; (3eMeO YUahQ (B((3eJQLe(B)s ([S.N] : (3GdeLdS GdhWfi ddKbGaI hGdafhf hGdGOGH , s, 1987)
Keywords: (3GdGOHs; (3JGQjN hfbOs