Source Data Reference for:
City = Lens
Time = 1800
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Lens | 1800 | 2,000 | Paul Bairoch | La population des villes europeennes de 800 a 1850 | |||
| Lens | 1815 | 2,300 | Valentin Parisot | Dictionnaire geographique universelle |