Source Data Reference for:
City = Sofia
Time = 1900
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Sofia | 1900 | 67,000 | Tertius Chandler | Four thousand years of urban growth | p496 | ||
| Sofia | 1900 | 67,900 | n/a | Gothaischer Hofkalender |