East, Gordon (February 1937). "Land Utilization in England at the End of the Eighteenth Century". The Geographical Journal. 89 (2). Blackwell Publishing on behalf of The Royal Geographical Society (with the Institute of British Geographers): 156–172. doi:10.2307/1786126. JSTOR1786126.
East, Gordon (February 1937). "Land Utilization in England at the End of the Eighteenth Century". The Geographical Journal. 89 (2). Blackwell Publishing on behalf of The Royal Geographical Society (with the Institute of British Geographers): 156–172. doi:10.2307/1786126. JSTOR1786126.