?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Nikolaos%2C+Christodoulou&rft.aufirst=Christodoulou&rft.aulast=Nikolaos&rft.tpages=351&rft.date=1999&rft.degree=Doctoral&rft.title=Metaphor+in+the+teaching+of+environmental+science.&rft.inst=Institute+of+Education%2C+University+of+London