?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Winter%2C+M.+de&rft.aulast=Winter&rft.aufirst=M.+de&rft.degree=Pre-master&rft.date=2019&rft.title=Tourism+in+the+Drentsche+Aa