?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Chen&rft.aufirst=Yen-Hsin&rft.au=Chen%2C+Yen-Hsin&rft.tpages=252&rft.date=2007&rft.degree=Doctoral&rft.title=The+professional+ethnics+of+teaching+%3A+A+philosophical+discussion+with+special+reference+to+the+thought+of+Isaiah+Berlin&rft.inst=Institute+of+Education%2C+University+of+London