Skip to Main Content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.

Guide to Dewey Decimal Classification

Understanding the Dewey Decimal Classification system which is used to organise books in the Library.

000 Generalities

000 is the most general class, and is used for works not limited to any one specific discipline, e.g., encyclopaedias, newspapers, general periodicals. This class is also used for certain specialised disciplines that deal with knowledge and information, e.g., computer science, library and information science, journalism. Each of the other main classes (100–900) comprises a major discipline or group of related disciplines.

  • 010 Bibliographies
  • 020 Library & information sciences
  • 030 Encyclopaedias & books of facts
  • 040 [Unassigned]
  • 050 Magazines, journals & serials
  • 060 Associations, organizations & museums
  • 070 News media, journalism & publishing
  • 080 Quotations
  • 090 Manuscripts & rare books