(3GdEfSGf h GdHjFI (B: (3efXheGJ GdWGbI h GdHjFI h GdScGf (B/ s - (3YHjO, gGfjs ((3YeGf (B:s (3OGQ GdTQhb,s, 2000)
Keywords: (3JdhK GdHjFIs; (3GdEfSGfs; (3GdWGbIs