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DECLARATI ON
This thesis contains no work which has not been accepted for the award of
any other degree or diploma in the University or any other tertiary institution and, to
the best of my knowledge and belief, contains no material published or written by
any other person, except where reference has been made in the text.
I give my consent to this copy of my thesis, when deposited in the
University’s Library, being available for loan or photocopying.
William Hartley
June 2008.