Source Data Reference for:
City = Porto
Time = 1900
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Oporto | 1900 | 175,000 | Tertius Chandler | Four thousand years of urban growth | p493 | ||
| Porto | 1911 | 194,000 | n/a | Gothaischer Hofkalender |