Sometimes academic institutions host Institutional Repositories to allow free access to their scholarly output like the UND Scholarly Commons.
Try searching Google Scholar or the other resources on this guide to find dissertation and theses.
The two Proquest databases linked below are subscription databases that digitize and store dissertations and theses for institutions worldwide, including UND.
The Dissertations & Theses database can be a good resource when you are looking for a copy of an inventory or other instrument for your research:
Since dissertations from the past 20 years include an extensive preview, you can check the table of contents or appendices to see if the author has included a copy of the research tool. If it looks promising, Interlibrary Loan the complete dissertation.