(3GdCNdGb aj GdESdGe (B/s - (3bQYhT , cGjOs ((3YeGf, GdCQOf (B:s (3OGQ GdefGgL,s, 2001)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdGNdGb GdESdGejIs