The Fenland in Roman times : studies of a major area of peasant colonization with a gazetteer covering all known sites and finds /
Phillips, C. W.(Charles William)
Salway, Peter.
London : Royal Geographical Society,
1970.
Base maps are Ordnance Survey Outline 1:25,000.
Maps in separate folder.
Bibliography p170-176
Geology, Stratigraphic.