?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Martin&rft.aufirst=Paula&rft.au=Martin%2C+Paula&rft.tpages=158&rft.title=The+nature+of+the+martian+interior&rft.inst=UCL+(University+College+London)&rft.degree=Doctoral&rft.date=2002