?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Andrew+John&rft.au=Betts%2C+Andrew+John&rft.aulast=Betts&rft.inst=UCL+(University+College+London)&rft.degree=Doctoral&rft.tpages=217&rft.title=German+Impersonal+Passives&rft.date=1990