Dewey Decimal Chart. Nevertheless, oclc has more lawyers than librarything, and a penchant for suing to defend their control of library data, including dewey, so we're posting this legal, if rather disrespectful, notice. E.g., 971 means canadian history;
000 general works, encyclopaedias, bibliographies, It is a numerical system using groupings of ten — i.e. History, current use, and development of the dewey decimal classification.