Final answer:
Every item in a library is marked with a unique call number, which helps categorize and locate the item. The Library of Congress Classification System groups similar topics together, making the navigation through library collections easier.
Step-by-step explanation:
Every item in the library has a specific label with a call number that is unique to that item. The system used at ODU Libraries allows users to browse the shelves and find items of similar topics grouped together. This system is called the Library of Congress Classification System. When searching for a fiction book, you would typically look for the book by the author's last name. However, for a non-fiction book, you would refer to the library's catalog to locate the relevant call number, which categorizes books on similar subjects together, utilizing a classification system like the Dewey Decimal system or the Library of Congress system.