?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Kolkman&rft.au=Kolkman%2C+R.&rft.aufirst=R.&rft.degree=Master&rft.title=Essentie+van+Jane+Jacobs&rft.date=2012