(3Ydhe GdSjGSI (B:s (3OQGSI aj GdGUhd h GdfXQjGJ (B/s - (3egfG, eMeO fUQ s ((3GdLRGQ (B:s (3OGQ GdcJGH GdMOjK ,s, 1988)
Keywords: (3GdSjGSI s; (3Ydhes