Source Data Reference for:
City = Piacenza
Time = 1900
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Piacenza | 1900 | 35,000 | Tertius Chandler | Four thousand years of urban growth | p501 | ||
| Piacenza | 1901 | 36,100 | Jan Lahmeyer | http://www.populstat.info/ | n/a | ||
| Piacenza | 1911 | 38,500 | Touring Club Italiano | Emilia Romagna (Guida Rossa) | p591 |