ENCYCLOPEDIA OF HERESIES AND HERETICS by Leonard George
"Although the more than 600 entries focus mainly on heresy in the West, entries on heresies in the lands of Eastern Christianity are included because of their importance to Western thought. . . . The 10-page introduction discusses how heresy has changed during the course of Western history. The encyclopedia entries are arranged from Abelard, Peter to Zwichau Prophets. . . . Following the encyclopedia is a list of entries organized by topic, divided into such sections as Christian Heresies and Heretics by Historic Period, Biographies of the Heretics, and Suppression of Heresy. The book concludes with two bibliographies."