?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Sylvia&rft.aulast=de+Boer&rft.au=de+Boer%2C+Sylvia&rft.tpages=48&rft.title=Explaining+achievement+inequality+in+primary+schools+using+social+contagion+theory+-+A+quantitative+study+on+Dutch+primary+education&rft.degree=Master&rft.date=2020