(3GdHjQhfi (B:s (3CHh GdQjMGf eMeO Hf CMeO (B/s - (3CMeO SYjO GdOeQOGTs ((3GdbGgQI (B:s (3OGQ GdeYGQa,s, 1980)
(3GdfU HGddZI GdYQHjIs
Keywords: (3JQGLe GdabgGA YGeIs; (3GdTQjYI GdESdGejIs