?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Ensing%2C+C.G.&rft.aulast=Ensing&rft.aufirst=C.G.&rft.degree=Master&rft.date=2010&rft.title=Zuidoost-Drenthe+boordevol+bio-energie