(3GdbWf(B.s (3RQGYJg hMdLg hJLGQJg (B/s - (3GHQGgje eMeO GHh GdYdGs ((3GdbGgQI (B:s (3eWHYI chSJG JSheGS hTQcGg(B,s, 1956)
(3jTed Ydi GQLGYGJ HHdjhLQGajIs
Keywords: (3GdJYGhfjGJ GdEfJGLjIs