(3Mbhb GdEfSGf hGdbGfhf GdOhdj GdEfSGfj (B/s - (3TWfGhj, ajUds ((3YeGf, GdCQOf (B:s (3OGQ hecJHI GdMGeO ddfTQ hGdJhRjY,s, 1999)
(3HHdjhLQGajI (B: (3U(B. 263-273.s
Keywords: (3Mbhb GdEfSGf (B((3bGfhf Ohdj(B)s; (3GdbGfhf GdEfSGfjs