(3GdegPH GdeSJaGO dJQHjI GdChdGO aj VhA GdcJGH hGdSfI (B/ s - (3GdNOGT, LGO Gddg Hf MSfs ((3YeGf (B:s (3GdecJHI GdESdGejI,s, 2000)
Keywords: (3GdESdGe(B. s; (3GdCWaGd(B. s; (3Mbhb GdCWaGd(B. s; (3GdJQHjI(B. s; (3GdbQBf GdcQje(B. s; (3GdMOjK GdTQja(B. s