License granted by Nikki Saunders (nikki.saunders@canterbury.ac.nz) on 2010-03-24T21:17:39Z (GMT): NON-EXCLUSIVE DISTRIBUTION LICENCE I hereby grant to Lincoln University or its agents the right to archive and to make available for consultation my thesis or dissertation in whole or in part in all forms of media, now or hereafter known, for the purposes of research and private study. It is understood that any person wishing to publish material from my thesis or use it for purposes other than research or private study will require my permission. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertation. I certify that the digital copy deposited with the University is a direct electronic equivalent of the version of my thesis approved by the University for the award of the degree. Except in the circumstances set out below, no emendation of content has occurred, and if there are any minor variations in formatting they are a result of the conversion to digital format. I have either used no third party copyright material, including charts, diagrams, graphs, photographs, maps, in my thesis, or I have obtained permission for such material to be included in the digital copy of the thesis. If permission has not been obtained, I have removed the third party copyright material from the digital copy and fully referenced the deleted material.