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C. Stephen Jaeger, The Origins of Courtliness. Civilizing Trends and the Formation of Courtly Ideals 939-1210.(The Middle Ages) University of Pennsylvania Press, Philadelphia 1985.
Book Review: I. Comparative Religions and Missions: Jerusalem Meeting of the International Missionary Council, Volume I—The Christian Life and Message in Relation to Non-Christian System of Thought and Life, Volume II—Relgious Education, Volume III—The Relation between the Older and the Younger Churches, Volume IV—The Christian Mission in the Light of Race Conflict, Volume V—The Christian Mission in Relation to Industrial Problems, Volume VI—The Christian Mission in Relation to Rural Problems, Volume VII—International Missionary Cooperation, Volume VIII—Addresses on General Subjects, Roads to the City of God: A World Outlook from Jerusalem