Source Data Reference for:
City = Gera
Time = 1900
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Gera | 1900 | 45,000 | Tertius Chandler | Four thousand years of urban growth | p499 | ||
| Gera | 1900 | 45,600 | Jan Lahmeyer | http://www.populstat.info/ | n/a |