Agricultural Productivity and Economic Growth in England, 1700-1760 (John, 1965) http://www.jstor.org/stable/2116391 Author(s): A. H. John Source: The Journal of Economic History, Vol. 25, No. 1 (Mar., 1965), pp. 19-34 Published by: Cambridge University Press on behalf of the Economic History Association Added on 11th November 2014