(3GdOjOGf GdTQjWjI HfjJgG GdJTQjMjI h BKGQgG GdUMjI (B/ s - (3GdYhfj, GdSjO GdUOjbs; (3GdSfhSj, GdRQhb eUHGMs ((3GdbGgQg (B:s (3GdOGQ GdYQHjI ddfTQ h GdJhRjY,s, 1991)
Keywords: (3GdOjOGfs; (3GdWajdjGJs