(3GdMdbI GdOQGSjI dYGe (B1990 (3Mhd eLdGJ GdGWaGd (B: s (3GdbGgQI (B24 - 26 (3fhaeHQ (B1990 . / s - (3eQcR JfejI GdcJGH GdYQHis ((3GdbGgQI (B: s (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1992)
Keywords: (3GdGWaGds; (3GdUMGaIs; (3GdGYdGes; (3GdOhQjGJs; (3GdUMas; (3OhQjGJ GdGWaGds; (3GdOhQjGJ GdUMGajIs