(3OQhS ai bGfhf GdYbhHGJ GdbSe GdNGU (B:s (3LQGFe GdEYJOGA Ydi GdCehGd hLQGFe GdEYJOGA Ydi GdCTNGU (B/s - (3eOMJ QeVGfs ((3GdbGgQI (B:s (3GdeDSSI GdafjI ddWHGYI hGdfTQ (B,s, 1996)
(3GdfU HGddZI GdYQHjIs
Keywords: (3bGfhf LfGFjs; (3GdLQGFe GdeGSI HGdCTNGUs