Some physical books in the Pollak Library must be paged (ordered and picked up). I recommending doing this a few days before visiting the library. This way, your books will waiting for you when you get here. You can even do that for books that are available for browsing. If you order the books on the day that you come to the library, there is a good chance that you may not be able to get the books that day.
Call the Circulation Desk at 657-278-2721 to request books.