(3NWI GdYed GdYGdejI ddehGQO GdhQGKjI GdMjhGfjI hGYdGf GfJQdGcf (B/ s - FAO (3efXeI GdCZPjI hGdRQGYI s ((3GjWGdjG (B: s (3efXeI GdGZPjI hGdRQGYI (B, s, 2007)
Keywords: (3YGe GdhQGKI (B- (3GdehGQO GdMjhGfjIs