They refer to a type of publication, which is usually published weekly, monthly, quarterly or annually in successive order. Bound Periodical Formed when issues of a periodical title are gathered to form a hardback volume. Stacks The shelves, which hold the library's books and journals, are called the stacks. You need the call number of a book to locate it in the stacks. Open Stacks Open stacks are stacks that are open to every user.
Users can freely access the books and journals in the open stacks.
Close Stacks Close stacks are stacks that cannot be directly access by users. Users might need to go through certain procedures in order to access the books and journals in the close stacks. Library of Congress Subject Heading A list of terms to be used as controlled vocabulary for subject headings created by the Library of Congress and used by libraries that provide controlled subject access to bibliographic records.