?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Berber&rft.au=Dedden%2C+Berber&rft.aulast=Dedden&rft.title=De+Kracht+van+Energie&rft.date=2016&rft.degree=Master