Source Data Reference for:
City = Lens
Time = 1950
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Lens | 1950 | 260,000 | Tertius Chandler | Four thousand years of urban growth | p509 | ||
| Lens | 1954 | 40,800 | Johan Huizinga | Internationaal aardrijkskundig woordenboek |