(3PGcQJc cja JYed h cja JSJNOegG HcaGAI (B/ s - (3YHOg, YeGO EHQGgjes; (3GdjMji, dejS aDGOs ((3YeGf (B:s (3OGQ GdfHQGS ddfTQ h GdJhRjY,s, 1990)
Keywords: (3GdPGcQIs; (3Yde GdfaSs