(3jhe GdbOS (B: s (3CHMGK GdfOhg GdKGefI (B: (3bOS YQHjI (B/ s - (3fOhg jhe GdbOS(B: 1997: (3YeGf (B)s ((3YeGf (B:s (3dLfI jhe GdbOS,s, 1997)
Keywords: (3JGQjN adSWjfs; (3JGQjN GdbOSs