(3QhSjG hWfj (B: s (3GdEjOjhdhLjG GdhWfjI ddOhdI (B/ s - (3RhZGfha, ZjfGhjs ((3HjQhJ (B:s (3OGQ GdaGQGHj,s, 1997)
Keywords: (3JGQjN QhSjGs; (3GdJGQjN GdSjGSjs