?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=I.+van&rft.aulast=Koldam&rft.au=Koldam%2C+I.+van&rft.tpages=18&rft.title=The+balance+between+the+green-+and+blue+water+footprint+of+crops+in+Groningen+from+1990-2050&rft.degree=Bachelor&rft.date=2020