Source Data Reference for:
City = Bologna
Time = 1850
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Bologna | 1850 | 71,000 | Tertius Chandler | Four thousand years of urban growth | p24 | ||
| Bologna | 1850 | 74,000 | Paul Bairoch | La population des villes europeennes de 800 a 1850 | |||
| Bologna | 1861 | 109,400 | 1861/62 | n/a | Gothaischer Hofkalender |