Acquisitions and Acquisitions et Bibliographic Services services bibliographiques

reproduce, loan, distribute or sell copies of this thesis in microform, paper or electronic formats. The author retains ownership of the copyright in this thesis. Neither the thesis nor substantial extracts fiom it may be printed or otherwise reproduced without the author's permission. L'auteur a accorde une licence non exclusive pennettant i la Bibliotheque nationale du Canada de reproduire, prster, distribuer ou vendre des copies de cette these sous la forme de microfiche/fih, d