(3GdfXe GdVQjHjI (B/s - (3jhfS CMeO GdHWQjbs ((3GdGScfOQjI (B:s (3GdOGQ GdLGeYjI (B,s, 1987)
(3jTed Ydi GQLGYGJ HHdjhLQGajI s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdVQGFHs