(3GdOjI GdTQYjI Hjf Gdabg hGdbGfhf GdTQYj (B/ s - (3UdGM, GdeYGjWI s ((3YeGf (B: s (3eDSSI GdHdSe ddfTQ hGdJhRjY, s, 2011)
Keywords: (3Gdabg GdGSdGej(B. s; (3GdbGfhf(B. s; (3MOhO GdbJd(B. s