Source Data Reference for:
City = Zwolle
Time = 1850
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Zwolle | 1840 | 16,600 | Jan Lahmeyer | http://www.populstat.info/ | n/a | ||
| Zwolle | 1850 | 14,000 | Paul Bairoch | La population des villes europeennes de 800 a 1850 |