Thực đơn
ISO_3166-2:COThực đơn
ISO_3166-2:COLiên quan
ISO 3166-1 alpha-2 ISO 31-11 ISO 3166-2 ISO 3166 ISO 3166-2:GB ISO 3166-2:FR ISO 3166-1 ISO 3166-2:VN ISO 3166-2:RU ISO 3166-2:KPTài liệu tham khảo
WikiPedia: ISO_3166-2:CO http://www.statoids.com/uco.html https://web.archive.org/web/20120112041245/http://... https://www.iso.org/obp/ui/#iso:code:3166:CO