# Ruhr Area

> urban area in North Rhine-Westphalia, Germany

**Wikidata**: [Q151993](https://www.wikidata.org/wiki/Q151993)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Ruhr)  
**Source**: https://4ort.xyz/entity/ruhr


## References

1. Virtual International Authority File
2. Freebase Data Dumps. 2013
3. [Source](https://www.it.nrw/statistik/eckdaten/bevoelkerung-nach-gemeinden-315)
4. Final report of ESPON project 1.4.3.
5. Population on 1 January by age groups and sex - functional urban areas
6. Population by age and sex - Cities and FUAs
7. National Library of Israel Names and Subjects Authority File
8. [Bibliography of the History of the Czech Lands](https://biblio.hiu.cas.cz/records/66b325bf-d916-4641-be71-1180dd96a267)
9. museum-digital
10. [Entdecken - ruhr.social](https://ruhr.social/explore)