(3GdJfhYGJ GddZhjI (B/ s - (3YHO GdLdjd, YHO GdbGOQs ((3YeGf (B:s (3OGQ UaGA ddfTQ hGdJhRjY,s, 1997)
Keywords: (3GddZI GdYQHjIs; (3GddSGfjGJs; (3Yde GdCUhGJs