(3fbO GdYde hGdYdeGA (B:s (3Ch JdHjS EHdjS (B/s - (3LeGd GdOjf CHj GdaQL YHO GdQMef s ((3eUQ (B:s (3EOGQGI GdWHGYIGdefjQjI ,s, 1976)
(3jTJed Ydi EQLGYGJ HHjdhLQGajI(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3TQjYI ESdGejIs -- (3GdOYhI GdESdGejIs