Book Reviews: Democracy in a World of Tensions: A Symposium prepared by UNESCO. Edited by RICHARD McKEON,assisted by STEIN ROKKAN. (Chicago: University of Chicago Press. 1951. Pp. xviii,540. $4.50.)

Book Reviews: Democracy in a World of Tensions: A Symposium prepared by UNESCO. Edited by RICHARD McKEON,assisted by STEIN ROKKAN. (Chicago: University of Chicago Press. 1951. Pp. xviii,540. $4.50.)