(3Yde GdGHOGY YfO LHQGf Ndjd LHQGf (B, (3Ndjd MGhi (B, (3fGOjG Jhjfi (B, (3UdGM SJjJI(B/ s - (3eQhGf aGQSs (1990)
Keywords: (3GdTYQ GdYQHis; (3GdYUQ GdMOjKs; (3JGQjN hfbOs