Yes. Timber integrates with your point-of-purchase system, and looks for any additional categorization information that you enter. Then, Timber places a list of those categories in a prominent location on your Web site. When your visitors “click” on a category they will see all of the books that you have assigned to it.
College bookstores have the option of adding a course hierarchy to help students select their books for all of their courses with a few simple clicks. (see "Is there a way to show students their required class materials?")