The best way to search Liber/Page is by using Advanced Search. Choose the department you want to search in:
Scroll down to enter in the Book, Liber, and Page.
Example: Book: OR, Liber: 30, Page: 41. You do not have to enter data into all fields to perform a search, but the more data you enter then the better your results will be. So you can just look for Liber and Page.
Note: Range searches are not currently supported.
It’s also possible to use Quick Search. Enter Book/Liber/Page using a slash between each. The slash acts as a hint to the Search Engine that you are looking for a Liber and Page. For example: OR/30/41. Or just 30/41.