(3GHh aQGS GdMeOGfj (B:s (3MjGJg hTYQg (B/s - (3YHO GdegOj ,YHO GdLdjd MSfs ((3YeGf (B:s (3ecJHI GdGbUi ,s, 1981)
(3GdHjdhZQGajG aj GdMhGTjs
Keywords: (3GHh aQGS GdMeOGfjs