?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Nicholls%2C+Gillian+May.&rft.aufirst=Gillian+May.&rft.aulast=Nicholls&rft.date=1991&rft.title=Case+studies+in+the+use+of+computer+software+in+the+teaching+of+energy.&rft.inst=Institute+of+Education%2C+University+of+London&rft.tpages=366&rft.degree=Doctoral