Search SOLO for Oxford Doctoral Dissertations (printed and electronic).
Oxford Research Archive (ORA) includes Oxford E-theses from 2006 onwards.
If you want to submit article or a dissertation to ORA follow instructions on the web site.
If you are looking for international Dissertations and Theses try searching some of the sources listed here. Search each of the sources separately from Oxlip+. Search Index to Theses or EThos for dissertations from UK Universities.
Search SOLO to find Oxford Doctoral Dissertations in print and online.