Source Data Reference for:
City = Blackburn
Time = 1850
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Blackburn | 1850 | 47,000 | Paul Bairoch | La population des villes europeennes de 800 a 1850 | |||
| Blackburn | 1850 | 45,000 | Tertius Chandler | Four thousand years of urban growth | p26 |