Bound with: The exodus from Hungary. New York : United Nations, 1957 -- 1957 issue of Basic facts about the United Nations. New York : United Nations, 1957 -- 1955 issue of International map of the world on the millionth scale. New York : United Nations, 1957 -- A sacred trust. New York : United Nations, 1957 -- Your United Nations : the official souvenir guide book. New York : United Nations, 1957 -- Water and worls today : its use and its conrol. New York : United Nations, 1957 -- I saw technical assistance change lives. New York : United Nations, 1957 -- Your unknown planet. New York : United Nations, 1957.