(3KdGKjI GdHQOI (B: s (3HQOI GdQShd Udi Gddg Ydjg h Sde (B/ s - (3MSjf, MSfs ((3GdOhMI (B:s (3ecJHI eOHhdj,s, 1987)
Keywords: (3GdTYQ GdYQHjs; (3GdJUha GdESdGejs; (3GdSjQI GdfHhjIs