One of the strengths of a traditional library catalog is its use of a controlled vocabulary (subject terms) to organize materials. In a discovery tool like PRIMO, this is still present, but you may also discover additional or different subject terms applied to eBooks, online articles, and other web-based materials. If you find a resource that seems useful, it can help to check the Subject Terms in the Primo record:
These are all hyperlinked, allowing for easy additional searches. Check out some of the books on this page to identify good subject terms for your particular topic.