3687document2570Decl_IS_Turnbull10PhD.pdfapplication/pdfd23f4dd3a34c2fdbf7bc63db18a6b53aMD51000492011-07-19 16:28:08http://etheses.bham.ac.uk//id/eprint/1034/2/Decl_IS_Turnbull10PhD.pdf