Charters and Custumals of the Abbey of Holy Trinity, Caen. Edited by Marjorie Chibnall. (Records of Social and Economic History, N.S. 5.) Pp. liv + 163 + 2 maps and 1 plate. Oxford University Press (for The British Academy), 1982. £12.50 - Barlow, Frank (The journal of ecclesiastical history, 1983)