(3GdeWGQMGJ GdTYQjI (B-(3bhGfjfgG heYLegG GdTYQj (B: s (3bhGfjfgG heYLegG GdTYQj (B/ s ((3YeGf (B: s (3OGQ GdVjGA ddfTQ hGdJhRjY , s, 1984)
Keywords: (3GdTYQ GdYQHj; GdeUWdMGJ; GdfbO GdCOHjs