?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Mercer&rft.aufirst=Paul+S.&rft.au=Mercer%2C+Paul+S.&rft.date=2002&rft.title=Television+realism+%3A+a+semiotic+approach&rft.inst=Institute+of+Education%2C+University+of+London&rft.tpages=452&rft.degree=Doctoral