?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Steeg&rft.au=Steeg%2C+D.L.J.C.+van&rft.aufirst=D.L.J.C.+van&rft.degree=Master&rft.date=2010&rft.title=Met+het+oog+op+morgen...Delfzijl+2030+Revisited