?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Venter&rft.au=Venter%2C+Deon+Jacobus&rft.aufirst=Deon+Jacobus&rft.degree=Doctoral&rft.inst=UCL+(University+College+London)&rft.tpages=325&rft.title=The+molecular+genetics+of+human+brain+tumors&rft.date=1990