{"id":"000996526","type":"book","title":"Economic rent and the intensification of English agriculture, 1086-1350","publisher":"Brill","publisher-place":"Leiden/New York/Köln","pages":"225-249","container-title":"Medieval farming and technology : The impact of agricultural change in Northwest Europe","author":[{"family":"Campbell","given":"Bruce M. S."}],"issued":{"raw":"1997"}}