(3QLYjI GdbhGfjf GdLfGFjI GdGUdM ddeJge (B/s - (3Lejd YHOGdHGbi GdUZjQs ((3GdbGgQI (B:s (3OGQGdfgVI GdYQHjI,s, 2000)
(3jTJed Ydi GQLGYGJ HHdjhLQGajI(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdbGfhf GdLfGFis; (3VeGfGJ GdJMbjbs