(3GdNQjWI GdSjGSjI ddeYGQVI GdYQGbjI (B/ s - (3GdYLdj, TeQGf, s ((3dfOf (B[(3GfLdJQG(B] : s (3OGQ GdMceI, s, 2000)
(3jJVef edMb(B.s
5 (3GhQGb aj fgGjI GdcJGH ZjQ OGNdI aj GdJQbje(B.s
(3jJVef GQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdeYGQVI GdSjGSjIs -- (3GdYQGb(B.s; (3GdGMRGH GdSjGSjIs -- (3GdYQGb(B.s; (3GdYQGbs -- (3GdJGQjNs -- (3GdbQf(B20.s