mySearch is an interface which allows you to search across a range of library resources simultaneously, including books, e-books, journal articles and databases
Jisc Library Hub Discover gives you access to the catalogue of most academic libraries in the UK.
If BU Library does not have a source that you need for your research:
If BU Library does not have a book that you need for your research:
You may also use other academic libraries via SCONUL Access.