(3GdYfGUQ dJMdjd Mbjbj (B/ s - (3HGQJd, QhHQJ Ls; (3GdSeQj, eMeO Ydjs ((3fjhjhQc (B:s (3Lhf hGjdj h ChdGOg,s, 1981)
Keywords: (3GdMSGHs; (3GdJaGVd h GdJcGeds