(3ebOeI aj GdajRjGA GdfhhjI (B/ s - (3UGdM, CSYO LdGds ((3GdHUQI (B:s (3hRGQI GdJYdje GdYGdj h GdHMK GdYdej,s, 1987)
Keywords: (3GdajRjGA GdPQjIs