Category:21 century BC
type: Ontology
creation date: 2026-08-10T02:08:38+02:00
imports: http://semantic-mediawiki.org/swivt/1.0

21 century BC
type: Class
page: Category:21 century BC
wiki namespace: 14
redirects to: Category:21st century BC
wiki page sort key: 21 century BC