What is another word for pressmarks?
Pronunciation: [pɹˈɛsmɑːks] (IPA) 
Pressmarks also known as library markings or shelf marks, are a set of alphanumeric characters that identify a particular library book's location on a shelf. There are several synonyms that can be used for pressmarks, such as call numbers, classification numbers, Dewey numbers, and bibliographic codes. Call numbers are used in academic libraries and follow the Library of Congress Classification system. Classification numbers can refer to any system of organizing library materials into categories. Dewey numbers refer to the Dewey Decimal system, which is commonly used in public libraries. Bibliographic codes are unique identifiers used in academic and research libraries to manage and track the circulation and usage of books. All of these synonyms essentially serve the same purpose, which is to help patrons locate books within a library's collection.
