(3ehShYI GdCdYGH hGdQjGVI (B:s (3EfLdjRj(B-(3YQHj (B/s - (3GdcjdGfj, JjSjQ,s ((3HjQhJ (B:s (3ecJHI dHfGf fGTQhf,s, 1997)
Keywords: (3GdQjGVI GdHOfjIs -- (3OhGFQ eYGQas; (3GdCdYGH GdQjGVjIs -- (3OhGFQ eYGQas