(3GYdGe GdSjGSI ai GdYQGb GdMOjK (B/ s - (3ejQ HUQis ([S.N] : (3QjGV GdQjS ddcJH hGdfTQ , s, 1987)
Keywords: (3JGQjNs; (3GdGMhGd GdSjGSjIs; (3GdYQGbs