(3efJgi GdWdH Gdi JQGK GdYQH (B: s (3OQGSGJ ai GdJQGK (B/ s - (3LeGd GdZjWGfis ((3GdbGgQI (B: s (3OGQ GdTQhb , s, 1997)
Keywords: (3GdJQGK GdYQHis; (3GdahdcdhQ GdYQHis; (3GdGOH GdYQHi (B- (3eLehYGJs