The blue helmets : a review of United Nations peace-keeping / United Nations. United Nations. Department of Public Information. United Nations Armed Forces History. International police History. 341.23 21 UNB Includes index. "United Nations publication sales no. E.96.I.14"--T.p. verso. "DPI/1800"--P. [4] of cover. New York : United Nations Dept. of Public Information, c1996. c1996. 1996 Text xx, 808 p. : eng