Source Data Reference for:
City = Shangqiu
Time = -500
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Shangqiu | -500 | 100,000 | George Modelski | World Cities -3000 to 2000 | p42 | ||
| Shangqiu | -400 | 130,000 | George Modelski | World Cities -3000 to 2000 | p42 | ||
| Shangqiu | -300 | 100,000 | George Modelski | World Cities -3000 to 2000 | p42 |