?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Charles%2C+MP&rft.aufirst=MP&rft.aulast=Charles&rft.tpages=286&rft.title=Agriculture+in+lowland+Mesopotamia+in+the+Late+Uruk-Early+Dynastic+period&rft.date=1990&rft.degree=Doctoral&rft.inst=UCL+(University+College+London)