26906document15937Decl_IS_Isaacs11MPhil.pdfapplication/pdfa9f9610ba096b6c75bcdcaf4ad2b16a1MD51299102011-11-10 09:08:08http://etheses.bham.ac.uk//id/eprint/2910/2/Decl_IS_Isaacs11MPhil.pdf