(3bGfhf GdYdGbGJ GdOhdjI (B/ s - (3SQMGf, CMeO s ((3HjQhJ (B: s (3GdeDSSI GdLGeYjI ddOQGSGJ hGdfTQ hGdJhRjY,s, 1993)
Keywords: (3GdYdGbGJ GdNGQLjI (B((3bGfhf Ohdj(B) s