(3jhe GdbOS (B: s (3BKGQ GdbOS ef CLd ehLO dEfbGPgG (B: (3CHMGK GdfOhI GdQGHYg (B/ s - (3dLfI jhe GdbOS (B( 4/ 1993 : (3YeGf(B)s ((3YeGf (B:s, 1993)
Keywords: (3JGQjN GdbOSs