?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Boulet&rft.au=Boulet%2C+A.+E.&rft.aufirst=A.+E.&rft.degree=Doctoral&rft.title=An+evaluation+of+a+general+model+for+individualizing+instruction&rft.inst=Institute+of+Education%2C+University+of+London&rft.tpages=368&rft.date=1980