(3EfLGRGJ GdefXeI GdYQHjI ddJfejI GdRQGYjI ef GdOQGSGJ GdbhejI NdGd QHY bQf (B: s (3GdedNUGJ GdJfajPjI (B/ s - (3GdefXeI GdYQHjI ddJfejI GdRQGYjIs ((3GdNQWhe (B:s (3GdefXeI,s, 1997)
Keywords: (3GdefXeGJ GdYQHjIs; (3GdRQGYIs; (3GdJbGQjQs; (3GdefXeGJ GdOhdjIs