Source Data Reference for:
City = Helsinki
Time = 1950
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Helsinki | 1925 | 211,000 | Tertius Chandler | Four thousand years of urban growth | p506 | ||
| Helsinki | 1950 | 367,000 | Tertius Chandler | Four thousand years of urban growth | p508 | ||
| Helsinki | 1952 | 439,800 | Johan Huizinga | Internationaal aardrijkskundig woordenboek |