http://dewey.info/scheme/a14/ en
909.8 1800-
909.82 20th century, 1900–1999
http://dewey.info/scheme/a14/ vi
909.8 1800-
909.82 Thế kỷ 20, 1900–1999
http://dewey.info/scheme/a14/ it
909.8 1800-
909.82 20° secolo, 1900-1999
http://dewey.info/scheme/edition/e23/ en
909.8 1800-
909.82 20th century, 1900-1999
909.821 1900-1919 909.822 1920-1929 909.823 1930-1939 909.824 1940-1949 909.825 1950-1959 909.826 1960-1969 909.827 1970-1979 909.828 1980-1989 909.829 1990-1999
Dewey Decimal Classification
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Unported License by OCLC Online Computer Library Center, Inc. Permissions beyond the scope of this license may be available at here. All copyright rights in the Dewey Decimal Classification system are owned by OCLC. Dewey, Dewey Decimal Classification, DDC, OCLC and WebDewey are registered trademarks of OCLC.