Democracy in a World of Tensions 1. Democracy in a World of Tensions. A Symposium prepared by UNESCO. Richard McKeon, ed. (Chicago: The University of Chicago Press, 1951.) Pp. xviii, 540. $4.50. 2. R. MacGregor Dawson: The Government of Canada. (Toronto: The University of Toronto Press, 1949). Pp. x, 664. $5.50. 3. R. MacGregor Dawson: Democratic Government in Canada. (Minneapolis: The University of Minnesota Press, 1949). 188 pp. $2.75. 4. L. F. Crisp: The Parliamentary Government of the Australian Commonwealth. (New Haven: Yale University Press, 1949). Pp. x, 344. $5.00. 5. L'Influence des Systèmes Electoraux sur La Vie Politique.Maurice Duverger, ed. Cahiers de la Fondation Nationale des Sciences Politiques. (Paris: Librairie Armand Coli