(3GHf QTO (B: (3MjGJg , eDdaGJg , JCKjQg , efgLg aj Gdabg (B/ s - (3GdYHjOj, MeGOjs ((3HjQhJ (B:s (3eDSSI GdeYGQa,s, 2000)
Keywords: (3GdJQGLes; (3GdadGSaIs; (3GdYQHs; (3GdQLGds; (3GdadSaI GdESdGejIs; (3fGTGhf UZGQ (B(10-14)(3Sfgs