?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=M.&rft.aulast=Postema&rft.au=Postema%2C+M.&rft.title=Het+bad+en+de+rand+%3A+De+Deltacommissie+(2008)+en+de+Friese+IJsselmeerkeringen&rft.date=2009&rft.degree=Master