(3YUeI GdCfHjGA aj GdcJGH h GdSfI h GdQO Ydi GdTHgGJ GdhGQOI YdjgG (B/ s - (3Vja Gddg, eMeO GdNVQ Hf GdfGLjs ((3GdOhMg (B:s, 1991)
Keywords: (3GdbQBf GdcQjes; (3GdfHhGJs