(3bQGAI aj BjI (B: s ( (3EdG EPG Jenqfi Cdbi GdTjWGf aj CefnqjJg(B) / s - (3fhad, CMeO s ((3YeGf (B: s (3OGQ GdaVjdI ddfTQ hGdJhRjY, s, 2007)
Keywords: (3GdBjGJ GdbQBfjI(B. s; (3JaSjQ GdbQBf(B. s