(3GdGfbdGH GdYKeGfi (B/ s - (3LQLi RjOGfs ((3HjQhJ (B: s (3OGQ GdgdGd ddWHGYI hGdfTQ , s, 1985)
Keywords: (3bUU GdHWhdGJs; (3GdbUU GdJGQjNjIs; (3GdGOH GdJGQjNis