?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Dobbinga&rft.aufirst=E.&rft.au=Dobbinga%2C+E.&rft.degree=Master&rft.title=Green+spaces+for+physical+activity+in+Groningen+%E2%80%93+Do+provision+and+needs+correspond%3F&rft.date=2016