Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Campbell, B. M. S. and Queen's University of Belfast and University of London. Centre for Metropolitan History and University of London. Institute of Historical Research",A Medieval capital and its grain supply : agrarian production and distribution in the London region c.1300,,[Geo Abstracts [for] the Historical Geography Research Group],1993,Historical geography research series,,1870074122,,https://cir.nii.ac.jp/crid/1130282269942708224