(3SfI ef YeQ eUQ (B: s (3JGQjN eUQ HGdhKGFb GdSQjI GdHQjWGfjI h GdCeQjcjI (B/ s - (3eMeO, eMSfs ((3GdbGgQI (B:s (3OGQ GdeYGQa,s, 1982)
Keywords: (3JGQjN eUQs; (3GdJGQjN GdSjGSjs