(3GdOhQ GdGJUGdj ddeNQL aj GdYed GdOQGej GdJdaRjhfj (B/ s - (3GdRYHj , GTQa aGdM jhSa s ((3YeGf (B: s (3OGQ hecJHI GdMGeO ddfTQ hGdJhRjY , s, 2012)
Keywords: (3GdGNQGL Gdafj s