The Cambridge Economic History of Europe from the Decline of the Roman Empire. Edited by J. H. Clapham, Emeritus Professor of Economic History in the University of Cambridge, Vice Provost of King's College, and the late Eileen Power, , Professor of Economic History in the University of London, Honorary Fellow of Girton College. Volume I, The Agrarian Life of the Middle Ages. (Cambridge: University Press; New York: Macmillan Company. 1941. Pp. xvii, 650. $7.50.)