(3GdOjebQGWjI aj acQ LeGd YHO GdfGUQ (B/s - (3Sja GdOhdI , YUeJ s ((3JhfS (B:s (3MGeO ddfTQ ,s, 1990)
Keywords: (3YHO GdfGUQ s; (3acQ s; (3GdOjebQGWjIs; (3LeGd s