(3GdSjGSI hGdJfejI aj GaQjbjG (B/s - (3HWQS , ZGdi HWQS s ((3GdbGgQI (B: s (3eYgO GdJNWjW Gdbhej , s, 1993)
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdbGfhf GdOhdj GdYGes