(3eONd Edi GdCOH GdESdGej (B/ s ((3GdOhMI (B: s (3QFGSI GdeMGce GdTQYjI hGdTDhf GdOjfjI HOhdI bWQ , s, 1987)
Keywords: (3ehVhYGJ YGeI aj GdOjGfGJs