Library staff will be glad to help you locate the periodicals you need. A list of citations of periodical articles, often grouped by subject and arranged alphabetically by author's last name. In our libraries, periodical indexes are available in print, on CD-ROM, or online. A valuable book which is difficult to find. Most libraries keep their rare books in a separate department called Special Collections.
Access is restricted to preserve the material.
Reference books include dictionaries, glossaries, concordances, encyclopedias, handbooks, bibliographies, research guides, directories, atlases, indexes, and abstracting services. In libraries, reference books are usually shelved in a separate section known as the Reference collection. These may not be checked out because they are needed frequently, sometimes daily, to answer questions at the reference desk. Reference books may not be checked out because they are needed by reference librarians to answer questions from library users. When you have a question about how to find some information, or how to use the library for research, you may contact the reference desk either in person, by phone, by e-mail, or online.