(3ai GdHfjI GdGjbGYjI ddTYQ GdYQHi (B: s (3fMh HOjd LPQi dYQhV GdNdjd hebOeI ai Yde GdGjbGY GdebGQf (B/ s - (3ceGd GHhOjHs ([ (3GdYQGb (B] : s (3OGQ GdTFhf GdKbGajI , s, 1987)
Keywords: (3GdTYQ GdYQHis; (3GdGhRGf GdTYQjIs; (3GddZI GdYQHjIs; (3GdJaYjdGJ GdTYQjIs; (3GdYQhV hGdbhGais