(3CVhGA h edGeM ef GdSGbjI GdMeQGA h hGOj GdPgH (B: s (3GdUMQGA GdeZQHjI (B/ s - (3HOjY, djdi Ndjds ((3HjQhJ (B:s (3OGQ GdeSjQI,s, 1976)
Keywords: (3ZQH EaQjbjGs; (3GdJGQjN GdSjGSjs; (3GdUMQGA GdZQHjIs