BiblioVault links appear for some of our ebooks because the ebooks are sold via multiple suppliers. We try to prevent Bibliovault links appearing but from time to time they crop up.  If you see a bibliovault page you can either simply try the links given as we should have access to the ebook through at least one of the links, or go back to the record for the ebook and scroll to the Notes field to see which platform you should get access to the ebook on:

Then click the link to access the ebook from the record, and then select the service given in the Notes field from the list on the BiblioVault page.

If you experience problems with BiblioVault links please email Library@st-andrews.ac.uk with the details of the book you have experienced the problem with and we will investigate.