Source Data Reference for:
City = Piacenza
Time = 1800
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Piacenza | 1800 | 28,000 | Tertius Chandler | Four thousand years of urban growth | p488 | ||
| Piacenza | 1800 | 28,000 | Tertius Chandler | Four thousand years of urban growth | p25 | ||
| Piacenza | 1800 | 28,000 | Jan De Vries | European urbanization 1500-1800 | p276 | ||
| Piacenza | 1800 | 28,000 | Paul Bairoch | La population des villes europeennes de 800 a 1850 | |||
| Piacenza | 1820 | 15,000 | Valentin Parisot | Dictionnaire geographique universelle |