(3ELQGAGJ GdeYGjfI GdafjI deSQM GdLQjeI (B/s - (3GdLHGQI, YHO GdaJGM YHO GddWjas ((3YeGf, GdCQOf (B:s (3OGQ GdMGeO ddfTQ hGdJhRjY,s, 2011)
(3HHdjhLQGajI (B: (3U(B. 221-230.s
Keywords: (3GdJMbjb GdLfGFjs; (3GdHMK GdLfGFjs; (3GdCOdI GdLfGFjIs