Source Data Reference for:
City = Cologne
Time = 1200
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Cologne | 1150 | 40,000 | Tertius Chandler | Four thousand years of urban growth | p471 | ||
| Cologne | 1200 | 50,000 | Paul Bairoch | La population des villes europeennes de 800 a 1850 | |||
| Cologne | 1200 | 50,000 | Tertius Chandler | Four thousand years of urban growth | p472 | ||
| Cologne | 1200 | 50,000 | Tertius Chandler | Four thousand years of urban growth | p538 | ||
| Cologne | 1200 | 50,000 | Tertius Chandler | Four thousand years of urban growth | p16 |