Although this thesis was produced using the word processing program of a mainframe computer (a Vax), no proper electronically readable copy is now available. The thesis has therefore been scanned in from a decent quality typescript (produced on a daisy-wheel electric typewriter) and therefore the PDF files are very large and are not searchable electronically.

The thesis can be downloaded in its entirety here (12.6 MB, .pdf) or as individual chapters below.

For those who wish to search the thesis electronically the original files have also been scanned using an OCR program, and can be used for searching. However it should be remembered that the version is not necessarily accurate, and therefore should be checked against the scanned images of each chapter. The searchable OCR version of the entire thesis as a PDF file (4.8 MB) can be accessed by clicking here.