(3GdLRGA GdLfGFj Hjf GdYbhHI hGdJOHjQ (B:s (3OQGSI JMdjdI ebGQfI ddYbhHI hGdJOGHjQ GdGMJQGRjI (B/s - (3Ndjd, CMeO VjGA GdOjf eMeOs ([(3GdbGgQI(B] :s (3CcGOjejI GdTQWI, cdjI GdTQWI,s, 1997)
Keywords: (3GdYbhHGJs; (3bGfhf GdYbhHGJs