• http://theses.ncl.ac.uk/jspui/handle/10443/6802
• http://theses.ncl.ac.uk/jspui/handle/10443/6803
• http://theses.ncl.ac.uk/jspui/handle/10443/6804
• http://theses.ncl.ac.uk/jspui/handle/10443/6805
• http://theses.ncl.ac.uk/jspui/handle/10443/6806
• http://theses.ncl.ac.uk/jspui/handle/10443/6807
• http://theses.ncl.ac.uk/jspui/handle/10443/6808
• http://theses.ncl.ac.uk/jspui/handle/10443/6809
• http://theses.ncl.ac.uk/jspui/handle/10443/6810
• http://theses.ncl.ac.uk/jspui/handle/10443/6811
• http://theses.ncl.ac.uk/jspui/handle/10443/6812
• http://theses.ncl.ac.uk/jspui/handle/10443/6813
• http://theses.ncl.ac.uk/jspui/handle/10443/6814
• http://theses.ncl.ac.uk/jspui/handle/10443/6815
• http://theses.ncl.ac.uk/jspui/handle/10443/6816
• http://theses.ncl.ac.uk/jspui/handle/10443/6817
• http://theses.ncl.ac.uk/jspui/handle/10443/6818
• http://theses.ncl.ac.uk/jspui/handle/10443/6820
• http://theses.ncl.ac.uk/jspui/handle/10443/6821
• http://theses.ncl.ac.uk/jspui/handle/10443/6822
• http://theses.ncl.ac.uk/jspui/handle/10443/6823
• http://theses.ncl.ac.uk/jspui/handle/10443/6824
• http://theses.ncl.ac.uk/jspui/handle/10443/6825
• http://theses.ncl.ac.uk/jspui/handle/10443/6826
• http://theses.ncl.ac.uk/jspui/handle/10443/6827
• http://theses.ncl.ac.uk/jspui/handle/10443/6828
• http://theses.ncl.ac.uk/jspui/handle/10443/6829